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Equilibrium strategic overbuying

  • Éric Avenel

    (University of Rennes 1 - CREM-CNRS, France)

  • Clémence Christin

    (Düsseldorf Institute for Competition Economics, Deutschland)

We consider two firms competing both to sell their output and purchase their input from an upstream firm, to which they offer non-linear contracts. Firms may engage in strategic overbuying, purchasing more of the input when the supplier is capacity constrained than when it is not in order to exclude their competitor from the final market. Warehousing is a special case in which a downstream firm purchases more input than it uses and disposes of the rest. We show that both types of overbuying happen in equilibrium. The welfare analysis leads to ambiguous conclusions.

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Paper provided by Center for Research in Economics and Management (CREM), University of Rennes 1, University of Caen and CNRS in its series Economics Working Paper Archive (University of Rennes 1 & University of Caen) with number 201205.

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Date of creation: Dec 2011
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Handle: RePEc:tut:cremwp:201205
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  1. GABSZEWICZ, Jean J. & ZANAJ, Skerdilajda, 2006. "Upstream market foreclosure," CORE Discussion Papers 2006043, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  2. Marie-Laure Allain & Saïd Souam, 2005. "Concentration horizontale et relations verticales," Working Papers 2005-31, Centre de Recherche en Economie et Statistique.
  3. Clémence Christin, 2013. "Entry Deterrence Through Cooperative R&D Over-Investment," Recherches économiques de Louvain, De Boeck Université, vol. 79(2), pages 5-26.
  4. Salinger, Michael A, 1988. "Vertical Mergers and Market Foreclosure," The Quarterly Journal of Economics, MIT Press, vol. 103(2), pages 345-56, May.
  5. Stahl, Dale O, II, 1988. "Bertrand Competition for Inputs and Walrasian Outcomes," American Economic Review, American Economic Association, vol. 78(1), pages 189-201, March.
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