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Entry and Competition in Differentiated Products Markets

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Author Info

  • Schaumans, C.B.C.
  • Verboven, F.L.

    (Tilburg University, Tilburg Law and Economics Center)

Abstract

We propose a methodology for estimating the competition effects from entry when firms sell differentiated products. We first derive precise conditions under which Bres- nahan and Reiss'entry threshold ratios (ETRs) can be used to test for the presence and to measure the magnitude of competition effects. We then show how to augment the traditional entry model with a revenue equation. This revenue equation serves to adjust the ETRs by the extent of market expansion from entry, and leads to unbiased estimates of the competition effects from entry. We apply our approach to seven different local service sectors. We find that entry typically leads to significant market expansion, implying that traditional ETRs may substantially underestimate the com- petition effects from entry. In most sectors, the second entrant reduces markups by at least 30%, whereas the third or subsequent entrants have smaller or insignificant effects. In one sector, we find that even the second entrant does not reduce markups, consistent with a recent decision by the competition authority.

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Bibliographic Info

Paper provided by Tilburg University, Tilburg Law and Economic Center in its series Discussion Paper with number 2011-025.

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Date of creation: 2011
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Handle: RePEc:dgr:kubtil:2011025

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Web page: http://www.tilburguniversity.nl/tilec/

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References

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  1. Schaumans, Catherine & Verboven, Frank, 2006. "Entry and Regulation - Evidence from Health Care Professions," CEPR Discussion Papers 5482, C.E.P.R. Discussion Papers.
  2. De Loecker, Jan & Warzynski, Frederic, 2009. "Markups and Firm-level Export Status," CEPR Discussion Papers 7450, C.E.P.R. Discussion Papers.
  3. Ackerberg, Daniel & Lanier Benkard, C. & Berry, Steven & Pakes, Ariel, 2007. "Econometric Tools for Analyzing Market Outcomes," Handbook of Econometrics, in: J.J. Heckman & E.E. Leamer (ed.), Handbook of Econometrics, edition 1, volume 6, chapter 63 Elsevier.
  4. Asplund, Marcus & Sandin, Rickard, 1999. "The Number of Firms and Production Capacity in Relation to Market Size," Journal of Industrial Economics, Wiley Blackwell, vol. 47(1), pages 69-85, March.
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Cited by:
  1. Martin Lábaj & Peter Silaniè & Christoph Weiss, 2013. "Entry and Competition in a Transition Economy: The Case of Slovakia," Department of Economic Policy Working Paper Series 003, Department of Economic Policy, Faculty of National Economy, University of Economics in Bratislava.
  2. Nikogosian, Vigen & Weigand, Jürgen, 2012. "Forward integration and market entry: Evidence from natural gas markets for household customers in Germany," ZEW Discussion Papers 12-062, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.

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