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Consumer surplus vs. welfare standard in a political economy model of merger control

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  • Neven, Damien J.
  • Roller, Lars-Hendrik

Abstract

This paper considers merger control in a common agency framework where firms and their competitors can influence the antitrust agency and where transparency while making lobbying less effective also implies real resource costs. We examine the performance of two alternative standards that can be assigned to the antitrust agency in the presence of these regulatory failures. We find that under a welfare standard, lobbying leads to the clearance of relatively inefficient mergers that decrease welfare(i. e. there is a type II error). By contrast, under a consumer surplus standard, the agency will ban relatively efficient mergers that would increase welfare (i. e. there is a type I error). Lobbying actually reduces the extent to which this occurs, albeit at a cost in terms of real resources. We also find that a consumer surplus standard is more attractive when mergers are large, when increasing the size of a merger greatly enhances industry profits, when there is little transparency, and when co-ordination costs amongst competitors are low. ZUSAMMENFASSUNG - (Konsumentenrente vs. Wohlfahrtskriterium in einem polit-ökonomischen Modell der Fusionskontrolle) In diesem Beitrag wird die wettbewerbsrechtliche Analyse der Fusionskontrolle mit einem Agency-Ansatz erweitert, in dem Unternehmen die Kartellbehörde beeinflussen können und wo Lobbying Kosten verursacht. Es werden zwei unterschiedliche Entscheidungskriterien der Fusionsbehörde hinsichtlich ihrer Effizienz untersucht. Benutzt die Fusionsbehörde ein Wohlfahrtskriterium führt Lobbying seitens der Unternehmen zur Genehmigung von ineffiziente Fusionen, was zu einem Sinken der Wohlfahrt führt. Andererseits führt das Kriterium der Konsumentenrente zur Untersagung von verhältnismäßig effiziente Fusionen, was die Wohlfahrt ebenfalls reduziert. Daraus ergibt sich, daß eine Berücksichtigung der Anreizstrukturen der Unternehmen die Wettbewerbsbehörde zu beeinflussen, wohlfahrttheoretisch keine eindeutige Betrachtu

(This abstract was borrowed from another version of this item.)

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Bibliographic Info

Article provided by Elsevier in its journal International Journal of Industrial Organization.

Volume (Year): 23 (2005)
Issue (Month): 9-10 (December)
Pages: 829-848

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Handle: RePEc:eee:indorg:v:23:y:2005:i:9-10:p:829-848

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Web page: http://www.elsevier.com/locate/inca/505551

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  1. Rama, Martin & Tabellim, Guido, 1998. "Lobbying by capital and labor over trade and labor market policies," European Economic Review, Elsevier, vol. 42(7), pages 1295-1316, July.
  2. Grossman, Gene M & Helpman, Elhanan, 1994. "Protection for Sale," American Economic Review, American Economic Association, vol. 84(4), pages 833-50, September.
  3. Bernheim, B Douglas & Whinston, Michael D, 1986. "Common Agency," Econometrica, Econometric Society, vol. 54(4), pages 923-42, July.
  4. Jean-Jacques Laffont & Jean Tirole, 1988. "The Politics of Government Decision-Making: A Theory of Regulatory Capture," Working papers 506, Massachusetts Institute of Technology (MIT), Department of Economics.
  5. 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.
  6. Tim Besley & Stephen Coate, . ""An Economic Model of Representative Democracy''," CARESS Working Papres 95-02, University of Pennsylvania Center for Analytic Research and Economics in the Social Sciences.
  7. Posner, Richard A, 1975. "The Social Costs of Monopoly and Regulation," Journal of Political Economy, University of Chicago Press, vol. 83(4), pages 807-27, August.
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