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Market integration and market concentration in horizontally differentiated industries

Listed author(s):
  • Eckel, Carsten

This paper derives the impact of market integration on equilibrium firm size and market concentration in horizontally differentiated industries. We show that market concentration (measured by the number of firms) can rise as a consequence of market integration if firms engage in RDcompetition. We also demonstrate that whether concentration occurs or not depends on the RDproduction function and on consumer preferences. This result implies that the welfare effects of market integration are not unambiguously positive.

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Paper provided by University of Munich, Department of Economics in its series Munich Reprints in Economics with number 20536.

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Date of creation: 2005
Handle: RePEc:lmu:muenar:20536
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  1. Krugman, Paul, 1980. "Scale Economies, Product Differentiation, and the Pattern of Trade," American Economic Review, American Economic Association, vol. 70(5), pages 950-959, December.
  2. Dixit, Avinash K & Stiglitz, Joseph E, 1977. "Monopolistic Competition and Optimum Product Diversity," American Economic Review, American Economic Association, vol. 67(3), pages 297-308, June.
  3. Lancaster, Kelvin, 1980. "Competition and Product Variety," The Journal of Business, University of Chicago Press, vol. 53(3), pages 79-103, July.
  4. Helpman, Elhanan, 1981. "International trade in the presence of product differentiation, economies of scale and monopolistic competition : A Chamberlin-Heckscher-Ohlin approach," Journal of International Economics, Elsevier, vol. 11(3), pages 305-340, August.
  5. Krugman, Paul R., 1979. "Increasing returns, monopolistic competition, and international trade," Journal of International Economics, Elsevier, vol. 9(4), pages 469-479, November.
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