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Substitutability and Competition in the Dixit-Stiglitz Model

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  • Winfried Koeniger
  • Omar Licandro

Abstract

The effects of competition on growth are analyzed in the recent literature by comparing economies with the same market structure but different degrees of substitutability. In this note, we show that in a general equilibrium model with monopolistic competition à la Dixit-Stiglitz the effect of substitutability on the allocation of resources is independent of the associated change in competition. Higher substitutability increases welfare, output and productivity because resources shift towards the most productive sectors. However, since markups are equal across sectors, changes in market power do not affect the relative price of consumption goods, implying that the induced changes in market power do not have any direct effect on equilibrium allocations.

Suggested Citation

  • Winfried Koeniger & Omar Licandro, "undated". "Substitutability and Competition in the Dixit-Stiglitz Model," Working Papers 2004-06, FEDEA.
    • Handle: RePEc:fda:fdaddt:2004-06
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    References listed on IDEAS

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    1. Chad Syverson, 2004. "Product Substitutability and Productivity Dispersion," The Review of Economics and Statistics, MIT Press, vol. 86(2), pages 534-550, May.
    2. Philippe Aghion & Christopher Harris & Peter Howitt & John Vickers, 2001. "Competition, Imitation and Growth with Step-by-Step Innovation," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 68(3), pages 467-492.
    3. 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.
    4. Piercarlo Zanchettin & Vincenzo Denicolò, 2004. "Competition and Growth in Neo-Schumpeterian Models," Discussion Papers in Economics 04/28, Division of Economics, School of Business, University of Leicester.
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    Cited by:

    1. Josheski, Dushko & Koteski, Cane & Lazarov, Darko, 2011. "Monopolistic competition: Critical evaluation the theory of monopolistic competition with specific reference to the seminal 1977 paper by Dixit and Stiglitz," MPRA Paper 33802, University Library of Munich, Germany.
    2. Simon Sosvilla-Rivero & Pedro Rodriguez, 2010. "Linkages in international stock markets: evidence from a classification procedure," Applied Economics, Taylor & Francis Journals, vol. 42(16), pages 2081-2089.
    3. Malte Mosel, 2009. "Competition, imitation, and R&D productivity in agrowth model with sector-specific patent protection," Working Papers 084, Bavarian Graduate Program in Economics (BGPE).
    4. Malte Mosel, 2010. "Competition, Imitation, and R&D Productivity in a Growth Model with Sector-Specific Patent Protection," CESifo Working Paper Series 3109, CESifo.
    5. Mosel Malte, 2011. "Competition, Imitation, and R&D Productivity in a Growth Model with Industry-Specific Patent Protection," Review of Law & Economics, De Gruyter, vol. 7(2), pages 601-652, December.
    6. Helge Sanner, 2005. "Economy vs History - What Does Actually Determine the Distribution of Shops' Locations in Cities?," ERSA conference papers ersa05p175, European Regional Science Association.
    7. Helge Sanner, 2004. "Economy vs. History: What Does Actually Determine the Distribution of Firms' Locations in Cities?," Volkswirtschaftliche Diskussionsbeiträge 67, Universität Potsdam, Wirtschafts- und Sozialwissenschaftliche Fakultät, revised Sep 2004.
    8. José A. Herce, "undated". "Could this ever happen in Spain? Economic and policy aspects of a SARS-like episode," Working Papers 2004-09, FEDEA.
    9. Helge Sanner, 2009. "Economy vs. history," The Annals of Regional Science, Springer;Western Regional Science Association, vol. 43(2), pages 283-306, June.

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    JEL classification:

    • L16 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Industrial Organization and Macroeconomics; Macroeconomic Industrial Structure

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