The digital transformation of the healthcare industry: exploring the rise of emerging platform ecosystems and their inﬂuence on the role of patients

While traditional organizations create value within the boundaries of their ﬁrm or supply chain, digital platforms leverage and orchestrate a platform-mediated ecosystem to create and co-create value with a much wider array of partners and actors. Although the change to two-sided markets and their generalization to platform ecosystems have been adopted among various industries, both academic research and industry adoption have lagged behind in the healthcare industry. To the best of our knowledge current Information Systems research has not yet incorpo-rated an interorganizational perspective of the digital transformation of healthcare. This neglects a wide range of emerging changes, including changing segmentation of industry market participants, changing patient segments, changing patient roles as decision makers, and their interaction in patient care. This study therefore investi-gates the digital transformation of the healthcare industry by analyzing 1830 healthcare organizations found on Crunchbase. We derived a generic value ecosystem of the digital healthcare industry and validated our ﬁndings with industry experts from the traditional and the start-up healthcare domains. The results indicate 8 new roles within healthcare, namely: information platforms, data collection technology, market intermediaries, services for remote and on-demand healthcare, augmented and virtual reality provider, blockchain-based PHR, cloud service provider, and intelligent data analysis for healthcare provider. Our results further illustrate how these roles transform value proposition, value capture, and value delivery in the healthcare industry. We discuss competition between new entrants and incumbents and elaborate how digital health innovations contribute to the changing role of patients. to counteract this limitation by establishing intercoder reliability and by validating our ﬁndings with industry experts. Second, our study did not reveal how traditional healthcare organizations should manage the implications of the digital transformation. We did not address possible changes to strategy and we did not assess the impact on internal processes and structures. Rather, we concentrated on detecting the interorganizational changes and emerging market segments within the healthcare industry. Third, our results are limited by cross-sectional information provided by the Crunchbase database. Future research could explore other methods such as econometrics to include more time-dependent and objective information. A second avenue of future research relates to platform competition in highly regulated industries such as healthcare. In various consumer-facing industries such as social


Introduction
Health spending continues to consume large shares of public spending (OECD Stat 2020). Against the backdrop of an aging society, which further increases the burden on healthcare systems, healthcare actors are seeking solutions to both cost and quality issues. For example, Kohn et al. (2000) report that on average around 75,000 preventable deaths occur each year in the United States and that health information technology (health IT) is a promising solution to this problem. Indeed, health IT has been recognized as a driver of enhanced clinical outcomes (Garg et al. 2005) and as a cost-saving lever (Hillestad et al. 2005), yet adoption of health IT is slow (Romanow et al. 2012;Kruse et al. 2016).
Research indicates multiple reasons why key stakeholders in healthcare have been slow to adopt health IT and leverage opportunities afforded by digital transformation (DT)-defined by (Vial 2019) as ''a process that aims to improve an entity by triggering significant changes to its properties through combinations of information, computing, communication, and connectivity technologies''-despite its promise for business value (DesRoches et al. 2008;Hsia et al. 2019).
First, healthcare is a complex and pluralistic public good marked by constant interaction across a varied set of individuals and organizations (Blumenthal 2011;Hansen and Baroody 2020;Davidson et al. 2018;Ozdemir et al. 2011). The healthcare industry primarily comprises various types of patients (e.g., physical traits and medical history), professional groups (e.g., physicians, nurses, administrators, and insurers), clinical organizations (e.g., hospitals, testing laboratories, and care facilities), treatment options, healthcare delivery processes, regulators (e.g., state agencies, policy-makers and credentialing entities), non-governmental organizations, and new digital intermediary firms (Fichman et al. 2011;Agarwal et al. 2020). Due to large costs involving the treatment of illnesses, the healthcare industry has evolved into an insurance-based industry. Insurance companies thereby contract healthcare providers and cover payments for various services provided by healthcare providers to their patients. Similarly, products produced by drug and medical devices manufacturers are generally prescribed by healthcare providers and compensated by insurance companies. Insurance companies, healthcare providers, and suppliers are strictly regulated by governments (Hansen and Baroody 2020). For example, in form of the Business Research Health Insurance Portability and Accountability Act. As a result of healthcare's complexity and regulation, health information silos emerged and interoperability of health IT between key stakeholders is lacking, which hamper efficiency, undermine coordination of care, and increase costs (Gupta and Sharda 2013;Hansen and Baroody 2020;Kellermann and Jones 2013;McClellan et al. 2013).
Second, adoption of health IT is often resisted by powerful actors in healthcare delivery (Bhattacherjee and Hikmet 2007). The resistance stems from various factors such as professional norms [physicians regard tasks aside from patient treatment as administrative nuisances (Fichman et al. 2011)], adverse influence [powerful, techaverse physicians affect other's use of health IT (Venkatesh et al. 2011;Davidson et al. 2018)], threats to professional autonomy (physicians aim to maintain the status and refuse new technology (Walter and Lopez 2008)), and privacy concerns [due to hacked medical devices (Meskó et al. 2017) as well as absent and opaque app privacy policies (Sunyaev et al. 2015)]. Shifting towards the organizational level, Ozdemir et al. (2011) demonstrate that providers lack the incentives to implement health IT systems or share their data due to competitive concerns. Such proprietary strategizing however, not only impedes the digital transformation of healthcare, it also means that healthcare provider can't leverage the full amount of patient data available across systems (Romanow et al. 2012). Additional barriers of organizations to adopt health IT include initial and ongoing costs (DesRoches et al. 2008;Jha et al. 2009), technical support, technical concerns (Kruse et al. 2016), the loss of productivity during the transition, and concerns about future obsolescence of purchased health IT (McClellan et al. 2013). Lastly, even if organizations adopt health IT, individuals often avoid using it (Kane and Labianca 2011).
Third, patients are another significant cause why the digital transformation is slowly unfolding within healthcare. Healthcare information is highly personal (Fichman et al. 2011) and the more patients perceive medical information as sensitive the less they are willing to disclose (Malhotra et al. 2004) or to adopt new health IT (Li et al. 2016). Anderson and Agarwal (2011) further demonstrate that individuals do not trust governments and for-profit organizations with electronic health systems and that their unwillingness to disclose health information is higher when information is requested from governments. When it comes to data protection, Kellermann and Jones (2013) and Wachter (2015) argue that patients encounter insufficient access to and control over health data as witnessed by Sunyaev et al. (2015) who stress that privacy policies of mobile health apps are often absent or opaque.
Lastly, health IT itself represent a significant factor for healthcare's slow digital transformation. Kellermann and Jones (2013) and Spil and Klein (2014) for example argue that few health IT suppliers build products that are easy to use. Consequently, physicians are frustrated that health IT requires lengthy data entry and disrupts rather than assists their practice. Such systems could even seriously harm patients as observed by Han et al. (2005) who identified an unexpected increase in patient mortality with EHR system implementation. Also, the validity of health sensors, digital health devices, and smartphone applications to offer reliable and high-quality data remains unsure (Meskó et al. 2017). Plante et al. (2016) found for example inaccuracies in a popular application for measuring blood pressure.
However, recent advances in technology and policy as well as increasing amounts of health data and venture capital are rapidly changing the status quo of the digital transformation of healthcare. Significant advances in IT have been made in terms of collection, storage, processing, analysis, and distribution of data enabling new forms of healthcare. New opportunities for data collection have been provoked especially by are especially making considerable efforts to enter healthcare through venture capital funding and acquisitions. Amazon for example invested in Grail, a cancerdetection start-up and Apple acquired Beddit, which develops sleep-monitoring software (Singer 2017).
To the best of our knowledge, most studies within the IS community exploring the digital transformation are primarily concerned with an intra-organizational perspective, such as the transformation of processes, products, and services, organizational structures, or business model (Kaltenecker et al. 2015;Hansen and Sia 2015). Current academic literature of digital transformation in healthcare also follows this trend by either exploring the digital transformation of traditional institutions (Mircea et al. 2010;Roehrs et al. 2017), health information technology (Agarwal et al. 2010), electronic health records (Kane 2015), big data (Kane 2017), mobile applications (Botha et al. 2018) or single components of the digital health industry such as mHealth (Handel 2011;Kumar et al. 2013;Luxton et al. 2011) or eHealth (Oh et al. 2005).
However, research on digital transformation should also take an inter-organizational perspective into account (Jacobides et al. 2018;Puschmann 2017), particularly since digital transformation may substantially influence inter-organizational partnerships in ecosystems when value is co-created among multiple and novel stakeholders (Sarker et al. 2012). As early as 1991, Bakos addressed the transition from linear links to two-sided markets (Bakos 1991), andParker et al. (2016) more recently postulated a transition from simple two-sided markets to more complex platform-mediated structures. However, these transformations seem almost totally absent from the evolution of the healthcare ecosystem and marketplace (Clemons 2018).
Therefore, the present study aims to understand the digital transformation of the healthcare industry from an ecosystem rather than a firm-level perspective. Consequently, we focus on the impact of new organizations that build upon the opportunities of the digital transformation instead of exploring how the digital transformation changed the processes and structure of incumbents. Drawing upon the methodology of Gordijn and Akkermans (2001) to model and analyze ecosystems, we aggregated organizations with similar characteristics and value streams into market segments and grouped them into generic roles to answer the following research questions: RQ1 During the digital transformation of the healthcare industry, which generic roles and value streams are adopted by emerging organizations? RQ2 How do these emerging organizations change patient treatment and shape the role of patients? RQ3 How can these emerging organizations compete against existing healthcare and technology incumbents?
The remainder of this paper is structured as follows: first, we analyze the underlying literature of digital platforms and ecosystem analysis; second, we describe our methodology; third, we present the generic roles and the generic value network of the digital healthcare industry; and lastly, we discuss the results and briefly present implications and future research. In recent years, companies drawing upon platform-based business models have increased substantially in number and size (Evans and Gawer 2016). Their emergence has altered the way people interact (e.g., Facebook), search for information (e.g., Google), buy products (e.g., Amazon) and utilize services (e.g., Airbnb). By drawing upon value co-creation, ecosystem orchestration and facilitating transactions, digital platforms transform linear value chains into platform-mediated two-sided markets (de Reuver et al. 2018;Constantinides et al. 2018;Schreieck et al. 2016). We define digital platforms according to Constantinides et al. (2018) and Parker et al. (2016) ''as a set of digital resources-including services and content-that enable value-creating interactions between external producers and consumers.'' In contrast to traditional organizations, digital platforms do not necessarily hold physical assets or produce the final service. For example, Airbnb has little in common with hotels of linear value chains, and Apple does not actually produce every application within their AppStore. Rather, digital platforms emphasize and facilitate core interactions between communities of the platform ecosystem, comprising consumers, producers, and third party actors (Parker et al. 2016;Jacobides et al. 2018). Both examples illustrate that digital platforms set architectural and governance rules to balance platform control, engage participants, and co-create value for one another (de Reuver et al. 2018;Parker et al. 2016;Ghazawneh and Henfridsson 2013;Tiwana 2015). In many instances, platforms therefore force organizations to change the way they operate and capture value; and can severely limit their ability to add value and to reach and to serve customers (Schreieck et al. 2019;Clemons 2018).
Digital platforms create value in two fundamental ways. First, by facilitating transactions and second, by offering technological building blocks that are used by complementors to develop new products and services (Parker et al. 2016;Cennamo 2019;Evans and Gawer 2016). Platforms that facilitate transactions are referred by Evans (2012) as exchange platforms which ''create value by helping two or more different types of users, who could benefit from getting together, find and interact with each other, and exchange value.'' Hence, these platforms intermediate dyadic relationships (Rochet and Tirole 2003;Armstrong 2006) and efficiently match buyers and sellers by reducing frictions such as search costs and information asymmetry. In contrast, platforms that offer technological building blocks, aim to orchestrate industry innovation by co-creating value with external complementors. According to Tiwana et al. (2010) these innovation platforms are defined as ''the extensible codebase of a software-based system that provides core functionality shared by the modules that interoperate with it, and the interfaces through which they interoperate.'' Platform owner of innovation platforms provide software connectors called application programming interfaces and software developer kits, which allow complementary innovators to leverage digital affordances and create generativity in the platform ecosystem (Hein et al. 2019). Additionally, some authors argue for community platforms which refer to ''a passive agent that enables individuals to access messages from, and disseminates messages to, other members'' (Butler et al. 2014). These platforms aim to unite various actors interested in similar content and supporting them in generating and disseminating their content among community members.
Digital platforms do not only change the nature of competition (Cennamo 2019) and strategy (Parker et al. 2016), they also affect consumers by allowing them to co-create value within the ecosystem (Hein et al. 2020). For example, digital platforms in the sharing economy can be conceptualized as evolving organizations composed of actors who collaboratively share, consume, and compete (Gerwe and Silva 2018). Thus, the roles of actors in an ecosystem are not fixed, but can evolve (Gawer 2014). An example is Airbnb, who provides a scalable integration of consumers, providers, and prosumers (Hermes et al. 2020c) into their platform-mediated ecosystem. Airbnb orchestrates these user roles by utilizing governance mechanisms such as defining the degree of openness and rating mechanisms (Tiwana et al. 2010) and incentivizes consumers to engage in the role of provider. Hence, they become prosumers (Hermes et al. 2020c).

Ecosystem analysis
In order to create value, ecosystems with actors comprising unique, supermodular/super-additive, or non-generic complementarities require a specific structure of relationships (Jacobides et al. 2018;Clemons 2018). Various methods exist to model, visualize, and analyze ecosystems, such as heuristic, conceptual, mathematical, and ontological methods, or cluster analysis . We focus our attention on the e3-value methodology by Gordijn and Akkermans (2001), which is a rigorous, conceptual modeling approach for ecosystem analysis and visualization (Böhm et al. 2010;Riasanow et al. 2017Riasanow et al. , 2020. Its aim is to define how economic value is created and exchanged within a network of actors. It offers a graphical approach that helps define and analyze multi-enterprise relationships by aggregating similar organizations into market segments. The main concepts of e3value are the following (Gordijn and Akkermans 2003): -Actors: refer to economically and often legally independent entities. They are represented by rectangles. -Market segments: refer to a set of actors that exhibit common characteristics and that value objects equally. They are represented by three rectangles. -Value objects: refer to objects, such as services, goods, or money, exchanged by actors. They are represented as text next to the value exchanges; -Value ports: refer to actors signaling that they want to offer or request value objects. This concept allows the abstraction of internal processes. They are represented by triangles. -Value interface: refer to ingoing and outgoing value offerings. Actors can have one or more value interfaces. This concept represents the mechanism of economic reciprocity. They are represented by small rectangles with rounded edges. -Value exchange: refer to actors willing to exchange value objects. They are represented by arrows connecting two value ports.

Methodology
The present study was guided by the e3-value methodology proposed by Gordijn and Akkermans (2001) and Gordijn and Akkermans (2003) and built upon the work of Böhm et al. (2010), Riasanow et al. (2017), and Riasanow et al. (2020). The e3value methodology is a rigorous modeling concept used to define and visualize how and with whom economic value is exchanged. We first conducted a literature review to identify the entities and value streams of the traditional healthcare industry. We then conducted a second literature review to identify the entities and value streams of the digital healthcare industry and then built the initial e3-value models of both industries. Thereafter, we analyzed the organizational data from the Crunchbase database of new healthcare organizations and conducted expert interviews to iteratively refine our e3-value models until all data was coded and insights from experts reached theoretical saturation. The iterative refinement process is illustrated in Fig. 1. We ended the process after three iterations.

Literature reviews
Both literature reviews were built upon the review process and categorization of concepts proposed by Webster and Watson (2002). However, our goal was to go beyond a descriptive review towards a review of understanding the digital transformation and its entities and value streams (Rowe 2014). According to Reis et al. (2018), the number of articles on digital transformation significantly increased after 2013. We therefore employ the year 2013 as proxy for the beginning of literature about digital transformation. Consequently, our first literature review ranged until 2013 to assess the market segments and value streams within the traditional healthcare industry, whereas the second literature review started in 2014 to assess new market segments and value streams within the digital healthcare industry. For the traditional health industry we used the following query to scan scientific databases: ((''Health care system'' OR ''health care industry'' OR ''health care'') AND (stakeholder OR ''value network'' OR ''value chain)) and the following query for the digital health care industry: ((''Health care'' OR healthcare) AND (digitalization OR digitization OR ''digital transformation'' OR ''digital innovation'')) and (''Digital health'' AND ''innovation''). After refining the initial hits and conducting a backward and forward search, we obtained 56 articles for the traditional industry and 64 articles for the digital industry. Each article was reviewed for entities, their descriptions, and value streams. Additional information about the search process is listed in Appendix D.

Data extraction and screening
We used Crunchbase, a socially curated database of organizations, organizational members, and investors to extract organizational data to code market segments and value streams to model our ecosystems. According to Basole et al. (2018), Crunchbase data is suitable to model ecosystems due to a large number of entries.

Business Research
Crunchbase offers a comprehensive database of incumbents and startups (Marra et al. 2015). Additionally, start-ups at all funding stages are listed in the database, which allows researchers to capture business model innovations (Marra et al. 2015;Perotti and Yu 2015). All entries on Crunchbase are verified before they are released online. Crunchbase, therefore, allows the extraction of a comprehensive overview of traditional and novel organizations related to an ecosystem and related technologies. 1 In cases where Crunchbase did not provide sufficient information, we used the organization's website, press articles, and news articles to derive the according market segment and value streams. We used the following search terms in the company description to determine the list of healthcare-related entities: mHealth, eHealth, digital health, telehealth, telemedicine, and wearables. These keywords corresponded to digital technologies or trends in the healthcare industry (Iyawa et al. 2016). This led to a list of 1987 globally emerging and established organizations within healthcare. A total of 157 companies were excluded from the coding list because they either did not demonstrate any relevance to the healthcare industry, were closed and no longer active, or referred to actors of the traditional healthcare ecosystem.

Coding of market segments and value streams
With the remaining 1830 emerging organizations, we used structured content analysis, including an inductive category development based on Mayring (2010) and Miles and Huberman (1994) to identify the market segments and value streams within the traditional and digital healthcare industry. First, one of the coders used the organizational descriptions derived from Crunchbase to develop codes for the market segments. For example, the market segment Telemedicine provider is connected to concepts such as: online service, real time, medical consultation, and asynchronous communication, see Table 1. Next, driven by the codes and the organizational descriptions from Crunchbase, descriptions for the market segments were developed, for example see Table 2.
Afterwards, the organizational descriptions and the descriptions of the market segments were given two additional raters, who independently coded the organizations to the market segments. All raters compared and discussed their coding for calibration purposes. Our aim was to establish intercoder reliability to ensure a consistent and reliable coding of the market segments. For this purpose, we used Fleiss's Kappa as measure for the validity of the intercoder reliability. Fleiss's Kappa allows for the computation of the intercoder reliability of k raters (Fleiss 1971) and ranges from 0 to 1, with 1 indicating an almost perfect agreement among raters. In each of the three iteration rounds, three raters independently coded a sample of 100 organizations to become familiar with the refined coding scheme. Throughout the coding, the raters discussed discrepancies to reach consensus and equal understanding for each description of the market segments. After coding the three samples, Fleiss's Kappa indicated an intercoder reliability of 0.76 in the first round, 0.81 in the second round, and 0.84 in the third round, reflecting acceptable intercoder reliability (Fleiss 1971). Therefore, we decided to have one rater code the remaining organizations. The total number of organizations for each new market segment in the digital healthcare industry is listed in Appendix C.

Visualization and validation
In the next step, we used the e3-value method to visualize the traditional and digital healthcare ecosystem based on the identified market segments and value streams. Similar market segments were grouped into generic roles. The expert interviews were conducted in Germany with healthcare experts or founders of digital health companies using a semi-structured approach (Myers and Newman 2007). The interviewees have significant experience in healthcare and digital technologies and are working either in a leading position or in information technology-related functions. Table 3 provides additional information about the interviewees. The e-3 value models and the description of the market segments were sent to the interviewees in advance. This allowed them to become familiar with the models and prepare feedback. Three of the interviews were conducted in person. The rest were conducted via online or phone conversations. Interviewee 1 and 2 were interviewed in the first iteration, interviewee 3 and 4 in the second iteration and the remaining interviewees in the third iteration. Six of the interviewees were working for companies representing the traditional healthcare industry (Interviewee 1, Interviewee 2, Interviewee 3, Interviewee 8, Interviewee 9, Interviewee 10). The rest of the interviewees were employed in companies that emerged through the digital transformation in the healthcare sector (Interviewee 4, Interviewee 5, Interviewee 6, Interviewee 7). All interviews were recorded, transcribed, and inductively coded.

Generic roles and value streams of emerging organizations of the digital healthcare industry
The results indicate that during the digital transformation of the healthcare industry emerging organizations converted into 15 new market segments and 3 new data collection technologies. Of the 15 new market segments, 9 market segments are represented by three new generic roles, 3 market segments are extending traditional generic roles, and 3 market segments are not represented by generic roles. The results also demonstrate that organizations are not bonded to one market segment. In contrast, most organizations occupy multiple market segments. Docandu for example uses AI to estimate diseases based on symptom input, offers online medical consultations, and provides a medical record to manage personal health data. Table 4 depicts the generic roles, market segments, and descriptions of the emerging organizations. Figure 2 illustrates the value streams among them. The presentation

Value proposition transformation
We observed that the emerging organizations adopt value propositions that are significantly different from those of traditional organizations. Interviewee 4 summarized the value proposition transformation as follows: ''There is a shift from a reactive healthcare service to a proactive one, to really try to improve and foster your health and try to get healthier, prevent getting sick, instead of trying to get healthy again when you are sick.'' (Interview 4) As a result, the value proposition transforms from an acute view of healthcare, in which the hospital is the center of care, toward one in which connected and remote care is focused on prevention. Most of the new market segments in the digital healthcare industry act upon this transformation towards prevention by concentrating on self-care, preventive telemedicine, and disease prediction. Organizations focusing on self-care provide users with simple applications ranging from nutrition guides and fitness videos to intelligent applications which track activities and offer health recommendations. Organizations leveraging preventive telemedicine connect healthcare provider, relatives and patients by offering continuous and remote monitoring tools and alert systems to notify users before diseases break out. Disease prediction refers to organizations adopting novel, digital technologies such as big data, machine learning, and artificial intelligence to predict treatments, diseases and health risks. For example, the market segment of intelligent diagnostics offers healthcare provider AI-based models to detect diseases early on. The rise of these new market segments and their shift towards prevention has especially been enabled through new technologies in the domain of collecting and digitally capturing health data, improvements in methodologies for data analysis, and cloud computing.

Value capture transformation
Although these new roles might trigger additional efficiency and reduce costs of healthcare services (Bardhan and Thouin 2013), the interviewees shared a more critical perspective, especially regarding the emergence of intermediaries. Interviewee 5 illustrated the problem as follows: ''Now more actors have to coordinate with each other, which requires more overhead.
[…] All this stuff is supposed to increase effectiveness, increase efficiency. But it is also increasing costs. And the question is, can we actually really pay for that?'' (Interview 5) The increased cost caused by the continuous emergence of new market segments was a major concern that was also mentioned by Interviewee 7. Both interviewees argued that new market segments increase costs by placing themselves within the existing value chains and by adding new services to the value chains. Hence, these  new market segments not only increase the coordination costs of traditional organizations, they are also likely to reduce the generic roles available to them. Consequently, organizations in traditional roles are facing an increasingly complex and intertwined industry. The rising complexity leads to higher costs in terms of identifying valuable actors, coordinating an increasing number of actors, and drawing on their services. According to the interviewees, these costs will either lower the profit margins of traditional healthcare organizations or increase the prices for patients; hence, increasing the total cost of healthcare. While this reflects an interesting insight, we argue that it omits efficiencies stemming from improving early intervention and prevention. In other words, it is most unlikely that new levels of interaction and reducing illness will increase the total cost of healthcare or they would hardly be adopted. We argue that the costs of coordinating services will go up, at least initially, whereas the total cost of services delivered and the need for further care will all be reduced and the quality of care improved. More significantly, as the coordination costs of traditional organizations goes up, their roles are reduced, and their revenues are reduced as a result, improvement in patient care and in system productivity may not be reflected in higher profits for traditional participants in the healthcare industry.  Fig. 2 Ecosystem visualization of the digital healthcare industry. Market segments have been depicted as actors for better readability. The grey rectangles around multiple market segments represent generic roles. To further improve readability and reduce complexity traditional generic roles have been omitted (manufacturer, purchaser, investors and consultants, political and humanitarian groups, researchers, and regulators) as well as the value streams between cloud service provider and information platforms, fiscal and market intermediaries, and services for remote and on-demand healthcare In regard to prices covered by patients, the analysis reveals a slowly emerging transformation towards personalized prices. Fitsense, for example, uses consumer data captured by devices and wearables to help insurances to provide the right kind of protection at the right price. Although Fitsense represents the only organization within our case base to offer such services, we argue that the proliferation of realtime data and comprehensive consumer profiles will increasingly transform the value capture of the healthcare industry towards a personalized one.

Platformization
The results demonstrate that the acute view of healthcare delivery transforms towards one in which connected and remote care focused on prevention is delivered from various actors. Such connected, network-based value delivery has been induced into the healthcare industry due to emerging new organizations with emerging new roles leveraging platform-based business models. Among the 15 new market segments we observed that a large part of them adopted exchange-based platforms. These include telemedicine providers, doctor recommenders, some apps for self-care, and health eCommerce. While telemedicine providers facilitate interactions among healthcare providers and patients, for example through video conferencing (e.g., Doctor Insta) or engagement platforms (e.g., Physitrack), doctor recommenders facilitate searching, reviewing and making contact (e.g., Jameda). Apps for self-care match users and fitness trainers (e.g., FitWell).
Regarding community-based platforms we found the market segments of Online Community and Online Learning Platform are building on this platform type. Figure 1, for example, is a social networking platform for healthcare professionals to post and comment on medical images, whereas PatientsLikeMe offers patients a platform to connect with others who have the same illness and to monitor and share their experiences with the objective to improve outcomes.
In terms of innovation platforms, we found no market segment that builds upon this type of platform. Rather, innovation platforms are explored by incumbent firms such as Apple, Google, or Nike. Nike for example launched the Nike? Accelerator which enables external developers to build sports software using Nike's technology and data. Although we could not identify a distinct market segment leveraging innovation platforms, our case base indicates that a small number of emerging organizations are experimenting with this platform type. Fitbit, for example, offers Web APIs and a development environment to draw on the generativity of external app developers.

Remote and on-demand healthcare
While we observed that patients interact directly with healthcare providers in the traditional healthcare value chain, we found that this interaction is increasingly mediated by services for remote and on-demand healthcare, information platforms, and healthcare intermediaries in the digital industry. Today, patients can access medical information and services through various online platforms and apps without Business Research the need to physically visit their healthcare providers. Interviewee 9 provides a concrete example for the benefits of remote and on-demand healthcare: ''Instead of making an ECG once a month or once a year, you can have a wearable that collect much more data that gets the information about arrhythmia or something that otherwise would obviously be missed. So, with the abundance of sensors suddenly it increases the information content and the possibilities of utilizing this.'' (Interviewee 9) Hence, traditional approaches to individual, acute, episodic, and facility-oriented healthcare are transforming toward longitudinal, connected, and remote healthcare even to the point where the central roles of hospitals and primary care physicians are slowly being supplemented, or even replaced, by new organizations such as telemedicine provider. The demand of remote and on-demand healthcare stems from consumers who are increasingly looking for care that can be delivered continuously; on their schedule, at a time and place of their choice. That is because technological advancements such as increases in processing power and storage capacity, 5G, cloud computing, and omnipresent data collection technology allow mobile health apps, personal devices (from sensors to wearables), and telemedicine providers to experience unprecedented scale and generativity, reduced IT costs, and service availability. As a result, consumers can leverage services for remote and ondemand healthcare to stream an unprecedented variety of data and analyses to healthcare providers. In return healthcare providers can draw on these services for continuous care to better engage patients in their own care by providing information, coaching, and tools to support each patient adopt behaviors to improve health outcomes. The platform character of these services allows the integration of the patient's personal network of family members, physicians, and social peers into this digital and remote healthcare process. For instance, family members can be provided with actionable information and alert notices, social peers can be integrated to help modify the patient's health behavior through gamification, and various healthcare providers and their IT can be integrated to manage the patient's health so that the healthcare services delivered are consistent and coordinated.

Patient empowerment
In the traditional healthcare industry, patients interact with a small number of roles that mainly consist of healthcare providers and fiscal intermediaries. Only a small fraction of patients ever interact with manufacturers. Additionally, we also observed an irregular and low interaction frequency between patients and healthcare providers. For example, outpatients rarely interact with healthcare providers or fiscal intermediaries. The process usually involves a couple of visits in a narrow timeframe until the treatment ends. Future visits will generally occur after a longer and unknown time interval. Hence, while the interaction is short-term and asynchronous, the involvement of the patient is also rather passive. Patients primarily wait for information without proactively asking for it or challenging the opinions and suggestions of their healthcare providers. As a result, patients have become fully dependent on the processes, information, and decisions of healthcare providers and systems. However, the interaction and the communication between patients and healthcare providers as well as the self-involvement of patients are slowly being changed because of the digital transformation of the healthcare industry. Patients are confronted with a much higher number of previously unknown roles, such as information platforms, services for remote and on-demand healthcare, and market intermediaries. In contrast to the traditional healthcare industry, patients also interact far more often with healthcare providers. This interaction is increasingly mediated by third parties such as information platforms, blockchain-based personal health records, and services for remote and on-demand healthcare. These complementary services are not only increasing the interaction frequency between patients and healthcare providers; they are also providing patients with the option of informing themselves upfront, choosing suitable care providers, controlling and securely sharing personal data, and thereby becoming an active actor in the interaction with healthcare providers and prosumer of healthcare services. Doctor recommenders, for example, allow patients to rate and review doctors and thereby produce value for other users of the platform. Similarly, blockchain-based personal health records allow patients to control who can access their data and by allowing, for example, intelligent diagnostics to access that data, patients co-create value in form of better datasets and algorithmic outcomes.
Therefore, we identify patient empowerment as a crucial result of the transformation of patient involvement. Consumers have the opportunity to be better informed and make more informed choices about their health and the services they want to acquire. Interviewee 10 provides a possible explanation for the increased empowerment of patients: ''The first part is patient centricity.
[…] Digital transformation is absolutely supporting this movement because digital companies are giving the tools to healthcare providers to center on the patient. […] The patient has got all this information which was not disclosed to him in the old system.'' (Interviewee 10)

Discussion
The study results indicate that the emerging digital transformation of healthcare is leading to a plethora of novel market segments, generic roles and value streams as well as the blurring of the distinction between healthcare and information technology industry. While some roles reinvent existing solutions by digitalizing distribution and services, others build upon digital innovations to offer new medical procedures. At the same time some market segments offer completely new digital services for problems that have existed before the digital transformation. Emerging companies reinventing existing solutions are either competing with existing healthcare incumbents or complementing the offerings of these incumbents. In contrast, emerging companies offering new digital services face strong competition from incumbent technology firms. Platform giants such as Google, Amazon, Apple and Microsoft are building the digital infrastructure of the digital healthcare ecosystem and are increasingly aiming to exploit their ability to deploy solutions that do not require strong medical competence. These platform giants also already control vast amounts of customer-focused data, including health data from wearable devices and lifestyle data from activities scheduling. Large amounts of healthrelated information can be inferred from an individual's speed of motion (from GPS), health concerns (from searches), and even diet (from online restaurant reservations and online restaurant ordering); none of this information is currently explicitly covered by healthcare privacy, and in most jurisdictions using this information within a single firm, to benefit the individual, would not be forbidden.
By leveraging customer data from related industries, self-training algorithms (machine learning) and major information technology resources and capabilities, these platform giants enjoy a significant advantage over almost all emerging companies that are focusing on technical rather than medical solutions. Since regulation of the digital healthcare ecosystem has yet not been moving fast, this enables big platform operators to quickly launch new customer-facing services without facing regulatory barriers. Hence, emerging companies face a so called red ocean (Kim 2005) when competing with incumbent healthcare firms on the basis of reinventing existing solutions and a red ocean when competing with incumbent platform operators on the basis of offering new digital services. A competitive path that involves less competition with established and dominant firms might therefore comprise building upon digital innovations to offer new medical procedures. On the one hand, big platform operators don't have the medical competence to compete in this domain and on the other hand, existing medical companies face multiple challenges of downsizing their current business model in favor for new business opportunities (Velu and Stiles 2013;Christensen et al. 2016). While these conditions are not sufficient to demonstrate that this path is indeed a blue ocean, it seems more fruitful for emerging companies to compete against equivalent new entrants compared to well-equipped incumbents. However, this path requires new entrants to develop significant medical skills in addition to technical skills to move into areas that will not immediately be dominated by big tech or big pharma.
Our observations suggest that the healthcare industry is indeed following the inevitable progression that Bakos (1991) and Parker et al. (2016) predicted so many industries would follow. The healthcare industry is moving from simple linear value chains to two-sided markets mediated by central marketplaces, and then to complex interacting multi-sided markets mediated by platforms with super-modular/superadditive value creation (Jacobides et al. 2018;Clemons 2018). High tech companies and software developers have recognized that control over a platform gives large platform operators irresistible competitive advantage; consider Microsoft's destruction of Netscape, or Google's ability to block competitors from Android devices (European Commission 2018; Edelman and Geradin 2016). Traditional retailers are finding that it is difficult to compete with platforms like Alexa when they move into home shopping, and traditional manufacturers are finding that it is difficult to function without cooperation with existing platform operators when they moving into smart homes and autonomous vehicles; even in traditional companies, platform operators' control of customer data is emerging as a source of competitive advantage (Schreieck et al. 2019). However, it seems likely that existing medical systems facing platform operators and platforms like Android and iOS will enjoy significant advantages due to their existing control of patient data.
The transformation of the patient-healthcare provider relationship is guided by various digital technology applications. Patients begin to evolve from consumers of the healthcare service into prosumers co-creating value with healthcare providers due to digital technologies and intermediaries enabling patients to co-create new services with various roles within the digital industry (Zhang et al. 2015;Hardyman et al. 2015;Lucas Jr et al. 2013;McColl-Kennedy et al. 2012;Vial 2019). Therefore, organizations have a growing interest in engaging patients with digital technologies to profit from the co-creation of value (Saldanha et al. 2017;Lusch and Nambisan 2015). For example, patients using IoT-wearables, digitizing daily nutrition intake or sharing medical experiences are co-creating value with various healthcare providers. On the one hand, their personal health data enables their physicians to provide better care and leverage preventive medicine, and on the other hand, accumulated health data provides the breeding ground for new diagnostic software and better algorithms. Additionally, patients become more and more empowered and self-reliant. The use of digital technologies encourages patients and consumers to look for more information about health, illnesses, medical treatments, and therapies (Agarwal et al. 2010). Patients can use medical social media platforms to share experiences and health-related data with others. At the same time, comparison portals empower patients to rate and recommend healthcare providers (Lupton 2013), which allows patients to share their individual experiences among each other. Lastly, the development of sensors, wearables, and IoT devices and the connectivity between these mobile devices and computers are the key concepts driving remote and on-demand healthcare services, which alters the patienthealthcare provider relationship toward the digital realm (Shah and Chircu 2018).

Limitations and future research
This study has several limitations. First, our analysis of the empirical data was limited by the subjective coding and the interpretation of the authors due to the qualitative research paradigm that we followed. Different coding and a different theoretical framework might have led to different findings. That is, we might have ended up with slightly different groups of market segments. However, we tried to counteract this limitation by establishing intercoder reliability and by validating our findings with industry experts. Second, our study did not reveal how traditional healthcare organizations should manage the implications of the digital transformation. We did not address possible changes to strategy and we did not assess the impact on internal processes and structures. Rather, we concentrated on detecting the interorganizational changes and emerging market segments within the healthcare industry. Third, our results are limited by cross-sectional information provided by the Crunchbase database. Future research could explore other methods such as econometrics to include more time-dependent and objective information. A second avenue of future research relates to platform competition in highly regulated industries such as healthcare. In various consumer-facing industries such as social media, food delivery, or online search for example platform competition is very likely to reflect winner take all markets (Katz and Shapiro 1994) demonstrating market convergence due to platform envelopment (Eisenmann et al. 2011;Hermes et al. 2020b). However, sensitive health data, complex clinical trials, control over core-assets, and patent-intensity might alter the common rules of platform competition (Cennamo 2019) which has usually been investigated in less regulated industries (e.g. Meyer and Cennamo 2019;Cennamo and Santalo 2013). Exploring how different industry structures shape platform competition seems therefore fruitful especially as insights for platform regulation might emerge. A third avenue for future research is to compare the impact of the digital transformation in further industries and to compare and synthesize findings to derive more robust ecosystem theories about digital transformation. Lastly, new health IT will become intensely personal and potentially invasive. We therefore call for the investigation of how individual rights to privacy, organizational demands for personal health data, and societal benefits of large-scale exchanges of health data can be integrated into existing regulations on data ownership and data governance.

Conclusion
Given the lack of prior empirical research on the digital transformation of the healthcare industry and the lack of an inter-organizational perspective of digital transformation, our research is intended to advance the understanding of which new market segments emerged as a result of the digital transformation and how they changed the role of patients. We therefore applied a structured content analysis to inductively explore the transformation of healthcare by leveraging the Crunchbase database and interview data. The results indicate 8 new roles within healthcare, namely: information platforms, data collection technology, market intermediaries, services for remote and on-demand healthcare, augmented and virtual reality provider, blockchain-based PHR, cloud service provider, and intelligent data analysis for healthcare provider. Our results further illustrate how these roles transform value proposition, value capture, and value delivery in the healthcare industry. Finally, we address the role of patient data as a source of sustainable competitive advantage, both for medical records platform operators and smart phone platforms like Android and iOS. Medical records platform operators have existing health data, while Android and iOS have lifestyle data; new entrants without access to either will be unable to compete.
Our theoretical contribution is twofold. First, our results advance the literature on digital transformation by contributing a macro and interorganizational perspective of the digital transformation of the healthcare industry. This is theoretically important as the digital transformation represents more than an intra-organizational phenomenon. Second, we provide empirical evidence on how the logic of platformmediated two-sided markets disrupted traditional linear value chains within the healthcare industry and on what platform types have and have not been adopted by emerging organizations. Lastly, we advanced the literature on the changing role of patients towards co-creators of value (Füller et al. 2014;Wirtz et al. 2019;Zhang et al. 2015;Hardyman et al. 2015) by illustrating how the role of patients has evolved during the digital transformation of healthcare.
For practitioners within traditional health organizations, the ecosystem models support strategic positioning and competitive analyses. The derived value networks provide practitioners with a macro perspective which eases decision-making about where to strive for a competitive advantage and where to give up sovereignty. Furthermore, the new value streams help to better understand and serve customers, especially digital natives, who have already been digitalizing their daily life activities and now engage in value co-creation and call for innovative healthcare solutions. For practitioners of emerging organizations, we illustrate promising markets and outline where and why they might face so called red oceans (Kim 2005).
For healthcare policy-makers the implications of the study are twofold. First, policy-makers need to develop regulatory frameworks that address the tensions between (1) corporate privatization of health data and access to health data for public research, (2) protection of individual health data and societal benefits of large-scale exchanges of health data, and (3) benefits of personalized medicine and individual rights to privacy ( Van Dijck et al. 2018). Hence, policy-makers need to develop shared policies at the international level to determine whether data flows are owned privately, corporately, or collectively and to foster open health data flows to reduce power asymmetries (Sharon 2016;Hermes et al. 2020a). Second, policymakers need to investigate whether the changes in data collection warrants regulatory intervention to safeguard data validity and quality. Prior work has already raised concerns about data collected through wearables and mobile apps. For example, self-reported data could lead to intentional or nonintentional false reporting, data believed to be generated by the person of interest could be generated by someone else (sharing of devices) (Sharon 2016), and the devices themselves might report in accurate data (Plante et al. 2016;Murakami et al. 2016).
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Appendix A: Generic roles of the traditional healthcare industry See Table 5. PBMs interact with pharmacies and beneficiaries. They decide on pharmacy charges and provide beneficiaries with access to a nationwide network of pharmacy providers, with whom the PBMs have contracts to offer services and drugs at lower prices. Furthermore, PBMs are able to earn additional revenues through contracting pharmaceutical companies, owning a mail-order facility, or repacking and selling data to the pharmaceutical industry (Garis et al. 2004) Pharmacy Pharmacies can be defined as service shops and be classified, for example, based on the type of merchandise sold or the number of stores. An ''independent'' pharmacy has less than four stores, whereas ''small chains'' can have between four and 10 stores under a chain. ''Large chains'' include more than 10 stores (Jambulingam et al. 2005) Business Research  Clinic A clinic is an establishment or hospital department in which outpatients receive medical treatment or advice, especially of a specialzed nature (Oxford 2019a) Diagnostic Center Diagnostic centers are healthcare providers, including laboratory services, radiology, and nuclear medicine (Interview 7) Nursing Home A nursing home is a facility for the stationary care of elderly or disabled individuals. Nursing homes are occupied by individuals who do not need to be hospitalized but cannot be taken care of at home

Research Research Institution
Research institutions are agencies, organizations, or universities that aim to foster innovation and collaboration in the research and development (R&D) area of healthcare. A distinction can be made between academic R&D (pure fundamental research and clinical trials) and commercial R&D (e.g., drug production)

Regulators Regulation Authority
Regulatory authorities use standards to improve data review (e.g., in pharmaceutical companies) (Hammond et al. 2009). Furthermore, they regulate and classify medical devices, assuring patient access to ''high quality, safe, and effective medical devices and avoiding access to products that are unsafe'' (WHO 2019)

Government
The government uses money generated from taxes to reimburse healthcare providers

Investors and Consultants Business Consultant
Many hospitals and care facilities need support when planning and implementing health information systems. In these cases, hospitals are advised to recruit external consultants to develop an according strategy (Brigl et al. 2005) Investor Private equity investors provide funds to companies in the form of growth or equity capital. They often pursue opportunities regarding a large healthcare provider with a stable reimbursement environment, such as acute care services, labs, or nursing homes (Robbins et al. 2008;Stevenson and Grabowski 2008) Appendix B: Ecosystem visualization of the traditional healthcare industry See Fig. 3. The administrative information system manages administrative, financial, and legal operations of healthcare providers. Software components include patient management patient accounting (PMPA), which is responsible for patient registration, admission, and discharge as well as a billing system and an electronic data interchange (EDI) system for insurance reimbursement (Choi et al. 2010) Clinical Information System The role of clinical information systems is to support the clinical activities of healthcare providers. The software components include for example electronic medical records (EMR), electronic health records (EHR) picture archiving and communication systems (PACS), and computerized physician order entry (CPOE) (Choi et al. 2010) Political and Humanitarian Groups NGO According to the United Nations ''a nongovernmental organization (NGO) is any nonprofit, voluntary citizens' group which is organized on a local, national or international level.[..] NGOs perform a variety of services and humanitarian functions, bring citizens' concerns to Governments, monitor policies, and encourage political participation at the community level'' (United Nations 2020). Example: Doctors of the World

Foundation/ Charity
A private foundation is a non-profit charitable body initiated by a single benefactor. For example, the Bill & Melinda Gates Foundation. In contrast, a public charity supports its activities by funds collected publicly Association Associations represent groups whose members pursue a shared political, economic or social interest and strive to promote these through the political process