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Sustainability In A Multiproduct And Multiple Agent Contestable Market


  • Vincent Iehlé


We prove that a natural monopoly can set subsidy free pricing and sustainable pricing schedules in general economic environment. The setting is a multiproduct and multiple agent contestable market where demands are elastic and where rivals can enter the sub-markets composed by a set of the products line and a set of agents. Our results suggest that the existence results of the extant literature admit analogues even in an environment where rivals have enlarged possibilities to enter the market and where demands react to prices. The approach makes use of cooperative games to deduce the main results under conditions of fair sharing cost, threshold in the consumption and regularity of the profit function.
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  • Vincent Iehlé, 2009. "Sustainability In A Multiproduct And Multiple Agent Contestable Market," Bulletin of Economic Research, Wiley Blackwell, vol. 61(2), pages 151-164, April.
  • Handle: RePEc:bla:buecrs:v:61:y:2009:i:2:p:151-164

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    References listed on IDEAS

    1. Benassy, Jean-Pascal, 1996. "Taste for variety and optimum production patterns in monopolistic competition," Economics Letters, Elsevier, vol. 52(1), pages 41-47, July.
    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. Paul Dunne & Maria del Carmen Garcia-Alonso & Paul Levine & Ron Smith, 2005. "Military Procurement, Industry Structure and Regional Conflict," Studies in Economics 0502, School of Economics, University of Kent.
    4. Flam, Harry & Helpman, Elhanan, 1987. "Industrial policy under monopolistic competition," Journal of International Economics, Elsevier, vol. 22(1-2), pages 79-102, February.
    5. Chari, V V & Kehoe, Patrick J, 1990. "International Coordination of Fiscal Policy in Limiting Economies," Journal of Political Economy, University of Chicago Press, vol. 98(3), pages 617-636, June.
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    JEL classification:

    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • C71 - Mathematical and Quantitative Methods - - Game Theory and Bargaining Theory - - - Cooperative Games
    • L12 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Monopoly; Monopolization Strategies


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