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Endogenous Industry Structure in Vertical Duopoly


  • Maija Halonen


This paper examines integration decisions of successive duopolists. It is shown that qualitatively the same pattern of integration emerges whether there is Cournot or Bertrand competition in the input market. The degree of integration in the industry is increasing in the size of the downstream market and decreasing in the average marginal cost of the industry and in the fixed integration cost. There jis a tendency for partial integration when one upstream firm is relatively efficient compared to its rival.

Suggested Citation

  • Maija Halonen, 1994. "Endogenous Industry Structure in Vertical Duopoly," STICERD - Economics of Industry Papers 07, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
  • Handle: RePEc:cep:stieip:07

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    1. repec:bin:bpeajo:v:21:y:1990:i:1990-3:p:205-286 is not listed on IDEAS
    2. Rey, Patrick & Tirole, Jean, 1986. "The Logic of Vertical Restraints," American Economic Review, American Economic Association, vol. 76(5), pages 921-939, December.
    3. Fudenberg, Drew & Tirole, Jean, 1984. "The Fat-Cat Effect, the Puppy-Dog Ploy, and the Lean and Hungry Look," American Economic Review, American Economic Association, vol. 74(2), pages 361-366, May.
    4. Bulow, Jeremy I & Geanakoplos, John D & Klemperer, Paul D, 1985. "Multimarket Oligopoly: Strategic Substitutes and Complements," Journal of Political Economy, University of Chicago Press, vol. 93(3), pages 488-511, June.
    5. Bonanno, Giacomo & Vickers, John, 1988. "Vertical Separation," Journal of Industrial Economics, Wiley Blackwell, vol. 36(3), pages 257-265, March.
    6. Vickers, John, 1985. "Delegation and the Theory of the Firm," Economic Journal, Royal Economic Society, vol. 95(380a), pages 138-147, Supplemen.
    7. Ordover, Janusz A & Saloner, Garth & Salop, Steven C, 1990. "Equilibrium Vertical Foreclosure," American Economic Review, American Economic Association, vol. 80(1), pages 127-142, March.
    8. Michael A. Salinger, 1988. "Vertical Mergers and Market Foreclosure," The Quarterly Journal of Economics, Oxford University Press, vol. 103(2), pages 345-356.
    9. Fershtman, Chaim & Judd, Kenneth L, 1987. "Equilibrium Incentives in Oligopoly," American Economic Review, American Economic Association, vol. 77(5), pages 927-940, December.
    10. Lin, Y Joseph, 1988. "Oligopoly and Vertical Integration: Note," American Economic Review, American Economic Association, vol. 78(1), pages 251-254, March.
    11. Gal-Or, Esther, 1991. "Duopolistic vertical restraints," European Economic Review, Elsevier, vol. 35(6), pages 1237-1253, August.
    12. Hart, O. & Tirole, J., 1990. "Vertical Integration And Market Foreclosure," Working papers 548, Massachusetts Institute of Technology (MIT), Department of Economics.
    13. George J. Stigler, 1951. "The Division of Labor is Limited by the Extent of the Market," Journal of Political Economy, University of Chicago Press, vol. 59, pages 185-185.
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    Cited by:

    1. John Sutton, 2001. "Rich Trades, Scarce Capabilities: Industrial Development Revisited," STICERD - Economics of Industry Papers 28, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.

    More about this item


    Endogenous industry structure; vertical duopoly; integration; competition; market.;

    JEL classification:

    • R14 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Land Use Patterns
    • J01 - Labor and Demographic Economics - - General - - - Labor Economics: General


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