Abstract
The stagnation of the Italian economy over the last two decades is widely documented. During this period, the world economy has become highly integrated, and foreign outsourcing has become a standard practice for firms. While trade theory predicts benefits from the internationalization of production, Italy seems to have gained negligibly from it, or, rather to have lost. In a simple model, we show that this may be the case when markets are overregulated and competition policies are weak. We study a small open economy with one oligopolistic and one competitive sector, which outsources part of its production process abroad. Advances in globalization entail lower tariff rates of outsourcing. Contrary to the common wisdom, we show that national welfare is an inverted U-shaped function of tariffs. There exists a tariff threshold, below which the economy loses from globalization because the competitive sector overproduces and the oligopolistic underproduces (the oligopolistic good has a higher marginal effect on welfare). Competition policies that target the competitive sector lower the threshold and allow the economy to benefit from increased openness.
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Notes
- 1.
On this point, a large economic literature (e.g. Barca 1997; Faini 2003; Faini et al. 2005; Nardozzi 2004; Ciocca 2007; Forni et al. 2010) maintains that markets in Italy were and still are less competitive than in most OECD countries. Bianco et al. (2012), for example, provide evidence of a stable or an even growing Lerner index on several final product markets throughout the whole nineties. The need for more competitive markets is also a primary policy issue (OECD 2005; CNEL 2007; Christopoulou and Vermeulen 2008) and a major objective of the National Reforms’ Program by the Italian Ministry of Economy and Finance (MEF 2011).
- 2.
The average tariff for Italy was decreasing in the period 1990–2010 (Accetturo et al. 2013).
- 3.
- 4.
From the technical point of view of the modeling structure, this assumption does not impinge on the results.
- 5.
An example of this complementarity is Faini (2003) who includes the historical north–south divide as an explanation for the Italian stagnation of the last two decades.
- 6.
- 7.
- 8.
Pilat et al. (2002) however distinguish between “fast-adopters” (UK, Netherlands, Sweden and Finland) and “laggards” (Italy and Spain and, to some extent, Germany and France).
- 9.
- 10.
- 11.
Against this view, Fortis and Curzio (2003) believe that the main threat for the Italian manufacturing is due to the “asymmetric” (i.e. unfair and illegal) competition by China.
- 12.
Note that the economy may become autarkic if the technology in sector X is generalised to one with constant elasticity of substitution (CES).
- 13.
- 14.
See Beverelli and Mahlstein (2011) for the same assumption.
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Appendix: Proof of Propositions
Appendix: Proof of Propositions
The proof of both propositions is based on utility function (25) and on the model solutions:
where \( \varOmega \left(\tau, N\right):=\alpha +\beta \cdot T\left(\tau \right)\cdot \left(N-1/N\right) \), and \( \varPsi \left(\tau, N\right):=\left(1-\alpha \right)+\left(1-\beta \right)\cdot T\left(\tau \right)\cdot \) \( \cdot \left(N-1/N\right) \). The conditions \( N>1 \) and \( \tau \ge 0>-\eta \) (\( \tau >-1+{A}^X{\left(1-a\right)}^{1/\eta}\left({\overline{P}}_X/{\overline{P}}_O\right) \)) guarantee positive solutions in the Cobb–Douglas (CES) case.
Proposition 1
We first show that utility (1) is continuous in τ for \( \tau \ge 0 \). This is immediately seen from the fact that Ω(τ, N) and Ψ(τ, N) are continuous in τ and strictly positive since \( T\left(\tau \right)>0 \) for any \( \tau \ge 0 \). Hence, X D and Y are also continuous in τ. Differentiating Eq. (1) with respect to the tariff rate yields
If τ goes to infinity, utility is zero since Ω(τ, N) and Ψ(τ, N) are finite and X D collapses to zero (see Eq. (27)). For \( \tau \ge 0 \) \( 0<U\left(\tau, N\right)<\infty, \forall N>1 \). Thus, \( {U}_{\tau}^{\prime }=0 \) if and only if the term in square brackets in Eq. (31) is zero. Its opposite is equivalent to the following cubic equation in the level of tariffs:
where
where
Note first that \( a>0 \), \( d>0 \), and \( c<0 \), which ensure two negative and one positive solution. (The sign of b is irrelevant.) Let \( {\tau}^{\ast } \) be the positive solution. In order to prove that the positive solution is a maximum observe that \( {U}_{\tau}^{\prime}\left(0,N\right)>0 \) because \( c<0 \) and Eq. (32) is the opposite of the term in square brackets in (31). Since U(τ, N) is continuous, and the other roots of Eq. (32) are negative, it follows that \( {U}_{\tau}^{\prime}\left(0,N\right)>0 \) in \( \left[0,{\tau}^{\ast}\right) \). The fact that \( {\tau}^{\ast } \) is a root of a cubic equation with at least two distinct solutions ensures that \( {U}_{\tau}^{\prime}\left(0,N\right)<0 \) if \( \tau >{\tau}^{\ast } \). Thus, \( {\tau}^{\ast } \) is a utility maximum. This proves Proposition 1.
Proposition 2
We show first that utility function (1) is continuous in N for \( N>1 \). This is immediately from the fact that Ω(τ, N) and Ψ(τ, N) are continuous in N and strictly positive for any \( N>1 \) and so are X D and Y. Differentiating the utility Eq. (25) and setting U ′ N (τ, N) equal to zero yields the following quadratic equation in \( M:=\left(N-1\right)/N \):
with
Since \( A<0 \) and \( C>0 \) for all feasible model parameters, \( \left({B}^2-4 AC\right) \) is strictly positive. This ensures the existence of two real and distinct solutions, which are discordant in sign. Since \( {N}_{1,2}=1/\left(1-{M}_{1,2}\right) \), the negative solution \( {M}_2=\left(-B-\sqrt{B^2-4 AC}\right)/2A \) is unfeasible because \( N>1 \) must hold. The positive solution is feasible only if \( {M}_1=\left(-B+\sqrt{B^2-4 AC}\right)/2A<1 \), which is equivalent to \( \left(A+B+C\right)>0 \). Replace A, B, C by their definitions and verify that this is a product of positive terms. Since \( A<0 \) and \( \left({B}^2-4 AC\right)>0 \), \( \left(A\cdot {M}^2+B\cdot M+C\right) \) is positive (negative) for \( M<{M}_1 \) \( \left(M>{M}_1\right) \) which proves that \( {N}_1=1/\left(1-{M}_1\right) \) is a utility maximum. Use definitions (34) and (26) to verify that the optimal N is
Observe that if τ becomes zero, \( {N}^{\ast } \) is infinite. This proves Proposition 2.
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Zotti, J. (2016). The Long Italian Stagnation and the Welfare Effects of Outsourcing. In: Bednar-Friedl, B., Kleinert, J. (eds) Dynamic Approaches to Global Economic Challenges. Springer, Cham. https://doi.org/10.1007/978-3-319-23324-6_6
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