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Market Performance With Multiproduct Firms

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  • Simon P. Anderson

    ()

  • André de Palma

    ()

Abstract

We revisit the fundamental issue of market provision of variety associated with Chamberlin, Spence, and Dixit and Stiglitz when firms sell several products. Both products and firms are envisaged as di?erentiated. We propose a nested demand model where consumers decide upon a firm then which variant to buy, and use it to determine the market’s biases when firms compete in product ranges and prices. The market system attracts too many firms with too few products per firm: firms restrain product ranges to relax price competition, but this exacerbates overentry. The results extend to generalized nested CES models.

Suggested Citation

  • Simon P. Anderson & André de Palma, 2003. "Market Performance With Multiproduct Firms," Virginia Economics Online Papers 357, University of Virginia, Department of Economics.
  • Handle: RePEc:vir:virpap:357
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    References listed on IDEAS

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    1. Michael Spence, 1976. "Product Selection, Fixed Costs, and Monopolistic Competition," Review of Economic Studies, Oxford University Press, vol. 43(2), pages 217-235.
    2. Robert C. Feenstra & James A. Levinsohn, 1995. "Estimating Markups and Market Conduct with Multidimensional Product Attributes," Review of Economic Studies, Oxford University Press, vol. 62(1), pages 19-52.
    3. Champsaur, Paul & Rochet, Jean-Charles, 1989. "Multiproduct Duopolists," Econometrica, Econometric Society, vol. 57(3), pages 533-557, May.
    4. Justin P. Johnson & David P. Myatt, 2003. "Multiproduct Quality Competition: Fighting Brands and Product Line Pruning," American Economic Review, American Economic Association, vol. 93(3), pages 748-774, June.
    5. Anderson, Simon P & de Palma, Andre, 1992. "Multiproduct Firms: A Nested Logit Approach," Journal of Industrial Economics, Wiley Blackwell, vol. 40(3), pages 261-276, September.
    6. 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.
    7. Anderson, Simon P & de Palma, Andre & Nesterov, Yurii, 1995. "Oligopolistic Competition and the Optimal Provision of Products," Econometrica, Econometric Society, vol. 63(6), pages 1281-1301, November.
    8. Avner Shaked & John Sutton, 1982. "Relaxing Price Competition Through Product Differentiation," Review of Economic Studies, Oxford University Press, vol. 49(1), pages 3-13.
    9. Goldberg, Pinelopi Koujianou, 1995. "Product Differentiation and Oligopoly in International Markets: The Case of the U.S. Automobile Industry," Econometrica, Econometric Society, vol. 63(4), pages 891-951, July.
    10. Daniel McFadden, 2001. "Economic Choices," American Economic Review, American Economic Association, vol. 91(3), pages 351-378, June.
    11. Katz, Michael L, 1984. "Firm-Specific Differentiation and Competition among Multiproduct Firms," The Journal of Business, University of Chicago Press, vol. 57(1), pages 149-166, January.
    12. Paul W. Dobson & Michael Waterson, 1996. "Product Range and Interfirm Competition," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 5(3), pages 317-341, September.
    13. Train,Kenneth E., 2009. "Discrete Choice Methods with Simulation," Cambridge Books, Cambridge University Press, number 9780521747387, April.
    14. Caplin, Andrew & Nalebuff, Barry, 1991. "Aggregation and Imperfect Competition: On the Existence of Equilibrium," Econometrica, Econometric Society, vol. 59(1), pages 25-59, January.
    15. Volker Grossmann, 2003. "Firm Size and Diversification: Asymmetric Multiproduct Firms under Cournot Competition," CESifo Working Paper Series 1047, CESifo Group Munich.
    16. Verboven, Frank, 1996. "The nested logit model and representative consumer theory," Economics Letters, Elsevier, vol. 50(1), pages 57-63, January.
    17. Neven, D. & Thisse, J-F., 1989. "On Quality And Variety Competition," CORE Discussion Papers 1989020, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
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    Citations

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    Cited by:

    1. Minniti Antonio, 2006. "Multi-product Firms, R&D, and Growth," The B.E. Journal of Macroeconomics, De Gruyter, vol. 6(3), pages 1-46, December.
    2. Ramon Caminal & Lluís M. Granero, 2012. "Multi‐product Firms and Product Variety," Economica, London School of Economics and Political Science, vol. 79(314), pages 303-328, April.
    3. Richards, Timothy J. & Hamilton, Stephen F. & Patterson, Paul M., 2010. "Spatial Competition and Private Labels," Journal of Agricultural and Resource Economics, Western Agricultural Economics Association, vol. 35(2), August.
    4. Lorz Oliver & Wrede Matthias, 2009. "Trade and Variety in a Model of Endogenous Product Differentiation," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 9(1), pages 1-14, November.
    5. Caminal, Ramon, 2006. "Too Many or Too Few Varieties? The Role of Multiproduct Firms," CEPR Discussion Papers 5938, C.E.P.R. Discussion Papers.

    More about this item

    Keywords

    Multiproduct firms; excess variety; nested demand; product line competition;

    JEL classification:

    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection

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