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Does Vertical Integration Promote Downstream Incomplete Collusion? An Evaluation of Static and Dynamic Stability

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Author Info

  • Mariana Cunha

    ()
    (FEP-UP, School of Economics and Management)

  • Paula Sarmento

    ()
    (CEF.UP, Research Center in Economics and Finance, University of Porto and FEP-UP)

Abstract

This paper analyzes the impact of vertical integration on the static and dynamic stability of downstream incomplete collusion. It is shown that a vertical merger between an upstream firm and a downstream cartel or fringe firm promotes downstream collusion, under certain conditions on the market size. However, for low market concentration, a vertical merger with a cartel firm hinders collusion. Moreover, a welfare analysis shows that consumer surplus increases with the vertical merger because the merger partially eliminates the double marginalization problem.

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Bibliographic Info

Paper provided by Universidade do Porto, Faculdade de Economia do Porto in its series FEP Working Papers with number 465.

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Length: 35 pages
Date of creation: Aug 2012
Date of revision:
Handle: RePEc:por:fepwps:465

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Keywords: Vertical integration; Collusion; Cartel Stability;

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  1. Donsimoni, Marie-Paule, 1985. "Stable heterogeneous cartels," International Journal of Industrial Organization, Elsevier, vol. 3(4), pages 451-467, December.
  2. d'ASPREMONT, Claude & JACQUEMIN, Alexis & GABSZEWICZ, Jean J. & WEYMARK, John A., . "On the stability of collusive price leadership," CORE Discussion Papers RP -522, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
  3. Normann, Hans-Theo, 2009. "Vertical integration, raising rivals' costs and upstream collusion," European Economic Review, Elsevier, vol. 53(4), pages 461-480, May.
  4. Jason WHALLEY & Peter CURWEN, 2008. "Is Functional Separation BT-Style the Answer?," Communications & Strategies, IDATE, Com&Strat dept., vol. 1(71), pages 145-168, 3rd quart.
  5. Nocke, Volker & White, Lucy, 2004. "Do Vertical Mergers Facilitate Upstream Collusion?," CEPR Discussion Papers 4186, C.E.P.R. Discussion Papers.
  6. Marc Escrihuela-Villar, 2004. "Cartel Sustainability and Cartel Stability," Working Papers 2004.44, Fondazione Eni Enrico Mattei.
  7. Abreu, Dilip, 1986. "Extremal equilibria of oligopolistic supergames," Journal of Economic Theory, Elsevier, vol. 39(1), pages 191-225, June.
  8. Salop, Steven C & Scheffman, David T, 1987. "Cost-Raising Strategies," Journal of Industrial Economics, Wiley Blackwell, vol. 36(1), pages 19-34, September.
  9. Nocke, Volker & White, Lucy, 2010. "Vertical Merger, Collusion, and Disruptive Buyers," CEPR Discussion Papers 7722, C.E.P.R. Discussion Papers.
  10. Reinhard Selten, 1973. "A Simple Model of Imperfect Competition, where 4 are Few and 6 are Many," Working Papers 008, Bielefeld University, Center for Mathematical Economics.
  11. Pedro Mendi & Rafael Moner-Colonques & José Sempere-Monerris, 2011. "Vertical integration, collusion, and tariffs," SERIEs, Spanish Economic Association, vol. 2(3), pages 359-378, September.
  12. Friedman, James W, 1971. "A Non-cooperative Equilibrium for Supergames," Review of Economic Studies, Wiley Blackwell, vol. 38(113), pages 1-12, January.
  13. Salant, Stephen W & Switzer, Sheldon & Reynolds, Robert J, 1983. "Losses from Horizontal Merger: The Effects of an Exogenous Change in Industry Structure on Cournot-Nash Equilibrium," The Quarterly Journal of Economics, MIT Press, vol. 98(2), pages 185-99, May.
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Cited by:
  1. Abel L. Costa Fernandes & Paulo R. Mota, 2012. "Triffin’s Dilemma Again and the Efficient Level of U.S. Government Debt," FEP Working Papers 469, Universidade do Porto, Faculdade de Economia do Porto.

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