Abstract
This paper demonstrates for the long run that producer surplus exactly equals the sum of rents paid to competitively purchased inputs and fails to account for rents paid to monopsonized inputs. Therefore, in the long run, whenever one or more inputs are subject to monopsony buying power, producer surplus underestimates rents. Because the concept of producer surplus is often used to help compare the welfare effects of alternative economic policies, the result is significant.
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Frasco, G., Jung, C. When producer surplus underestimates rents. Atlantic Economic Journal 29, 393–405 (2001). https://doi.org/10.1007/BF02299329
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DOI: https://doi.org/10.1007/BF02299329