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Suppliers' merger and consumers' welfare

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  • Eric Avenel

    (CREM - Centre de recherche en économie et management - UNICAEN - Université de Caen Normandie - NU - Normandie Université - UR - Université de Rennes - CNRS - Centre National de la Recherche Scientifique)

Abstract

This article explores the consequences of a suppliers' merger on consumers' welfare when the product is sold to consumers by independent retailers competing à la Cournot. The literature shows that under the standard assumptions of private contracting and passive beliefs, there is no impact at all. I show that this unintuitive result strongly depends on the implicit assumption that suppliers have infinite capacities of production. Indeed, assuming that suppliers face a capacity constraint and that retailers hold out-of-equilibrium beliefs compatible with this constraint, I show that the merger raises the price on the final market and reduces consumers' welfare.

Suggested Citation

  • Eric Avenel, 2012. "Suppliers' merger and consumers' welfare," Post-Print halshs-00960898, HAL.
  • Handle: RePEc:hal:journl:halshs-00960898
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    References listed on IDEAS

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    1. Oliver Hart & Jean Tirole, 1990. "Vertical Integration and Market Foreclosure," Brookings Papers on Economic Activity, Economic Studies Program, The Brookings Institution, vol. 21(1990 Micr), pages 205-286.
    2. Eric Avenel, 2012. "Upstream Capacity Constraint and the Preservation of Monopoly Power in Private Bilateral Contracting," Journal of Industrial Economics, Wiley Blackwell, vol. 60(4), pages 578-598, December.
    3. Mas-Colell, Andreu & Whinston, Michael D. & Green, Jerry R., 1995. "Microeconomic Theory," OUP Catalogue, Oxford University Press, number 9780195102680.
    4. Patrick Rey & Thibaud Vergé, 2004. "Bilateral Control with Vertical Contracts," RAND Journal of Economics, The RAND Corporation, vol. 35(4), pages 728-746, Winter.
    5. Rey, Patrick & Tirole, Jean, 2007. "A Primer on Foreclosure," Handbook of Industrial Organization, in: Mark Armstrong & Robert Porter (ed.), Handbook of Industrial Organization, edition 1, volume 3, chapter 33, pages 2145-2220, Elsevier.
    6. McAfee, R Preston & Schwartz, Marius, 1994. "Opportunism in Multilateral Vertical Contracting: Nondiscrimination, Exclusivity, and Uniformity," American Economic Review, American Economic Association, vol. 84(1), pages 210-230, March.
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    Cited by:

    1. Eguia, Jon X. & Llorente-Saguer, Aniol & Morton, Rebecca & Nicolò, Antonio, 2018. "Equilibrium selection in sequential games with imperfect information," Games and Economic Behavior, Elsevier, vol. 109(C), pages 465-483.

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    More about this item

    Keywords

    vertical contracting; opportunism; horizontal merger; capacity constraint;
    All these keywords.

    JEL classification:

    • L40 - Industrial Organization - - Antitrust Issues and Policies - - - General
    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices

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