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Le contrôle a posteriori des concentrations peut-il augmenter l'efficacité des politiques de concurrence ?

  • Patrice Bougette
  • Florent Vénayre

A recent French merger case involving two large water companies seems to toll the death of ex-post merger control. This paper aims at highlighting the interest of that type of control by showing its crucial role for competition authorities as a complement of the current notification system. Stressing the limits of an exclusively ex-ante control, we show that the possibility to act ex-post on market structures would lead to more virtuous behaviors in the ex-ante control by reducing adverse selection effects. The ex-post merger control would also permit new means of action on agents’ behaviors after the merger. Despite those positive effects, the implementation of an ex-post merger control should be attentively carried out in particular because some legal security problems could emerge. However, those issues might be offset by increasing the competence of the French competition authority in merger cases.

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Paper provided by LAMETA, Universtiy of Montpellier in its series Working Papers with number 05-07.

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Length: 21 pages
Date of creation: Jan 2005
Date of revision: Feb 2008
Handle: RePEc:lam:wpaper:05-07
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  1. Said Souam & Patricia Charléty, 2002. "Analyse économique des fusions horizontales," Revue Française d'Économie, Programme National Persée, vol. 17(2), pages 37-68.
  2. David Encaoua & Roger Guesnerie, 2006. "Politiques de la Concurrence," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00177629, HAL.
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  4. Gunther Tichy, 2001. "What Do We Know about Success and Failure of Mergers?," Journal of Industry, Competition and Trade, Springer, vol. 1(4), pages 347-394, December.
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  12. Lionel Janin & Benoît Menoni, 2005. "Le Contrôle des concentrations en France : Une analyse empirique des avis du Conseil de la Concurrence," Working Papers 2005-37, Centre de Recherche en Economie et Statistique.
  13. Mason, Robin & Helen Weeds, 2003. "The Failing Firm Defence: Merger Policy and Entry," Royal Economic Society Annual Conference 2003 148, Royal Economic Society.
  14. Lars-Hendrik Röller & Johan Stennek & Frank Verboven, 2000. "Efficiency Gains from Mergers," CIG Working Papers FS IV 00-09, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
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  17. Klaus Gugler & Dennis C. Mueller & B. Burcin Yurtoglu & Christine Zulehner, 2001. "The Effects of Mergers: An International Comparison," CIG Working Papers FS IV 01-21, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
  18. repec:inr:wpaper:245845 is not listed on IDEAS
  19. Johan Lagerlöf & Paul Heidhues, 2002. "On the Desirability of an Efficiency Defense in Merger Control," CIG Working Papers FS IV 02-08, Wissenschaftszentrum Berlin (WZB), Research Unit: Competition and Innovation (CIG).
  20. Farrell, Joseph & Shapiro, Carl, 1990. "Horizontal Mergers: An Equilibrium Analysis," American Economic Review, American Economic Association, vol. 80(1), pages 107-26, March.
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  22. Tomaso Duso & Damien J. Neven & Lars-Hendrik Röller, 2007. "The Political Economy of European Merger Control: Evidence using Stock Market Data," Journal of Law and Economics, University of Chicago Press, vol. 50, pages 455-489.
  23. Florent Venayre & Christian Montet, 2004. "Grande distribution française : Faire confiance au marché ou céder à la tentation réglementaire ?," Post-Print halshs-00652153, HAL.
  24. Fridolfsson, Sven-Olof & Stennek, Johan, 2006. "Industry Concentration and Welfare - On the Use of Stock Market Evidence from Horizontal Mergers," Working Paper Series 682, Research Institute of Industrial Economics.
  25. Motta,Massimo, 2004. "Competition Policy," Cambridge Books, Cambridge University Press, number 9780521816632.
  26. Florent Venayre, 2004. "Échanges d'informations : les jurisprudences française et communautaire - À l'aune des prédictions théoriques," Revue d'Économie Industrielle, Programme National Persée, vol. 108(1), pages 91-112.
  27. Bergman, Mats A. & Jakobsson, Maria & Razo, Carlos, 2005. "An econometric analysis of the European Commission's merger decisions," International Journal of Industrial Organization, Elsevier, vol. 23(9-10), pages 717-737, December.
  28. Damien J. Neven, 2006. "Competition economics and antitrust in Europe," Economic Policy, CEPR;CES;MSH, vol. 21(48), pages 741-791, October.
  29. Besanko, David & Spulber, Daniel F, 1993. "Contested Mergers and Equilibrium Antitrust Policy," Journal of Law, Economics and Organization, Oxford University Press, vol. 9(1), pages 1-29, April.
  30. Medvedev, A., 2004. "Structural Remedies in Merger Regulation in a Cournot Framework," Discussion Paper 2004-006, Tilburg University, Tilburg Law and Economic Center.
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