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Input foreclosure under alternative entry conditions in the upstream market

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Abstract

We analyze a successive vertical Cournot oligopoly model with homogeneous intermediate and final goods. Under restricted entry in both upstream and downstream markets, the input price continuously falls on a sequential merger path. Partial input foreclosure never occurs. However, when there is free entry in the upstream market, we find that the input price initially falls but eventually rises as incremental vertical mergers occur. Thus, under upstream free-entry equilibrium, the possibility of partial input foreclosure arises.

Suggested Citation

  • Ioannis N. Pinopoulos, 2011. "Input foreclosure under alternative entry conditions in the upstream market," Discussion Paper Series 2011_15, Department of Economics, University of Macedonia, revised Nov 2011.
    • Handle: RePEc:mcd:mcddps:2011_15
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    1. Inderst, Roman & Valletti, Tommaso, 2011. "Incentives for input foreclosure," European Economic Review, Elsevier, vol. 55(6), pages 820-831, August.
    2. Roman Inderst & Tommaso M. Valletti, 2007. "Market Analysis In The Presence Of Indirect Constraints And Captive Sales," Journal of Competition Law and Economics, Oxford University Press, vol. 3(2), pages 203-231.
    3. Arghya Ghosh & Hodaka Morita, 2007. "Free entry and social efficiency under vertical oligopoly," RAND Journal of Economics, RAND Corporation, vol. 38(2), pages 541-554, June.
    4. Géarard Gaudet & Ngo Van Long, 1996. "Vertical Integration, Foreclosure, and profits in the Presence of Double Marginalization," Journal of Economics & Management Strategy, Wiley Blackwell, vol. 5(3), pages 409-432, September.
    5. Matsushima, Noriaki, 2006. "Industry profits and free entry in input markets," Economics Letters, Elsevier, vol. 93(3), pages 329-336, December.
    6. Michael A. Salinger, 1988. "Vertical Mergers and Market Foreclosure," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 103(2), pages 345-356.
    7. Roman Inderst & Tommaso Valletti, 2009. "Indirect versus Direct Constraints in Markets with Vertical Integration," Scandinavian Journal of Economics, Wiley Blackwell, vol. 111(3), pages 527-546, September.
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    More about this item

    Keywords

    Input foreclosure; Vertical integration; Vertical mergers; Free entry.;
    All these keywords.

    JEL classification:

    • L1 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance
    • L4 - Industrial Organization - - Antitrust Issues and Policies

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