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Natural Oligopolies: A Vertical Differentiation Model

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  • Lahmandi-Ayed, Rim

Abstract

This article contains a more complete characterization of conditions under which vertically differentiated markets are or are not natural oligopolies than has been found previously in the literature. Specifically, previous results on markets in which firms have cost functions with constant returns are incomplete; these results are expanded. Moreover, results are provided for markets with firms having increasing or decreasing marginal cost functions. Copyright 2000 by Economics Department of the University of Pennsylvania and the Osaka University Institute of Social and Economic Research Association.

Suggested Citation

  • Lahmandi-Ayed, Rim, 2000. "Natural Oligopolies: A Vertical Differentiation Model," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 41(4), pages 971-987, November.
  • Handle: RePEc:ier:iecrev:v:41:y:2000:i:4:p:971-87
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    Cited by:

    1. Auer, Raphael & Sauré, Philip, 2014. "Spatial Competition in Quality," CEPR Discussion Papers 10027, C.E.P.R. Discussion Papers.
    2. Auer, Raphael A. & Sauré, Philip, 2017. "Dynamic entry in vertically differentiated markets," Journal of Economic Theory, Elsevier, vol. 167(C), pages 177-205.
    3. Adel Ben Youssef & Rim Lahmandi-Ayed, 2008. "Eco-labelling, Competition and Environment: Endogenization of Labelling Criteria," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 41(2), pages 133-154, October.
    4. Jean-Marc Bonnisseau & Rim Lahmandi-Ayed, 2007. "Vertical differentiation with non-uniform consumers' distribution," International Journal of Economic Theory, The International Society for Economic Theory, vol. 3(3), pages 179-190.
    5. WAUTHY, Xavier Y., 2014. "From Bertrand to Cournot via Kreps and Scheinkman: a hazardous journey," CORE Discussion Papers 2014026, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
    6. Jean-Marc Bonnisseau & Hend Ghazzai, 2005. "Monopole, stratégies multiproduit et incitation à la recherche et développement," Cahiers de la Maison des Sciences Economiques b05025, Université Panthéon-Sorbonne (Paris 1).
    7. Rim Lahmandi-Ayed, 2007. "Finiteness property with vertical and horizontal differentiation: does it really matter?," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 33(3), pages 531-548, December.
    8. Raphael Anton Auer & Philip Ulrich Sauré, 2011. "Spatial Competition in Quality, Demand-Induced Innovation, and Schumpeterian Growth," Working Papers 2011-10, Swiss National Bank.
    9. repec:eee:indorg:v:52:y:2017:i:c:p:96-132 is not listed on IDEAS
    10. Amacher, Gregory & Koskela, Erkki & Ollikainen, Markku, 2003. "Environmental Quality Competition and Eco-labeling," Discussion Papers 848, The Research Institute of the Finnish Economy.

    More about this item

    JEL classification:

    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • L22 - Industrial Organization - - Firm Objectives, Organization, and Behavior - - - Firm Organization and Market Structure
    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection

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