Competition in the Korean Internet Portal Market: Network Effects, Profit, and Market Efficiency
Internet portals serve as platforms that coordinate advertising and user markets, and the portal market features network effects within and between both sides. We model the market structure in order to explain network effects and other factors of competition such as prices for advertisements, contents, and differentiated services offered. We empirically identify these effects with data from South Korea and analyze the role of the effects in terms of profit and market efficiency. The results indicate that a negative indirect network effect exists in the user market but is prevailed over by the direct network effect. This explains how Internet portals make profits by increasing user visits. Further, we show the existence of network effects causes consumer¡¯s surplus not to decrease with market concentration.
|Date of creation:||Oct 2009|
|Date of revision:||Nov 2009|
|Publication status:||Published in Springer, Review of Industrial Organization (later version of this paper)|
|Contact details of provider:|| Postal: 599 Gwanak-Ro, Gwanak-Gu, Seoul 151-744|
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- Mark Armstrong, 2006.
"Competition in two‐sided markets,"
RAND Journal of Economics,
RAND Corporation, vol. 37(3), pages 668-691, 09.
- Rochet, Jean-Charles & Tirole, Jean, 2003.
"Platform Competition in Two-Sided Markets,"
IDEI Working Papers
152, Institut d'Économie Industrielle (IDEI), Toulouse.
- Jean-Charles Rochet & Jean Tirole, 2003. "Platform Competition in Two-Sided Markets," Journal of the European Economic Association, MIT Press, vol. 1(4), pages 990-1029, 06.
- Jean-Charles Rochet & Jean Tirole, 2014. "Platform Competition in Two-Sided Markets," CPI Journal, Competition Policy International, vol. 10.
- Jean-Charles Rochet & Jean Triole, 2002. "Platform competition in two sided markets," LSE Research Online Documents on Economics 24929, London School of Economics and Political Science, LSE Library.
- Jean-Charles Rochet & Jean Triole, 2002. "Platform Competition in Two Sided Markets," FMG Discussion Papers dp409, Financial Markets Group.
- Marc Rysman, 2004. "Competition Between Networks: A Study of the Market for Yellow Pages," Review of Economic Studies, Oxford University Press, vol. 71(2), pages 483-512.
- Barros Pedro P & Kind Hans Jarle & Nilssen Tore & Sørgard Lars, 2005. "Media Competition on the Internet," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 4(1), pages 1-20, January.
- Berry, Steven & Levinsohn, James & Pakes, Ariel, 1995. "Automobile Prices in Market Equilibrium," Econometrica, Econometric Society, vol. 63(4), pages 841-90, July.
- Aviv Nevo, 1998.
"Measuring Market Power in the Ready-to-Eat Cereal Industry,"
NBER Working Papers
6387, National Bureau of Economic Research, Inc.
- Nevo, Aviv, 2001. "Measuring Market Power in the Ready-to-Eat Cereal Industry," Econometrica, Econometric Society, vol. 69(2), pages 307-42, March.
- Nevo, Aviv, 1998. "Measuring Market Power in the Ready-To-Eat Cereal Industry," Research Reports 25164, University of Connecticut, Food Marketing Policy Center.
- Nevo, Aviv, 1998. "Measuring Market Power in the Ready-To-Eat Cereal Industry," Food Marketing Policy Center Research Reports 037, University of Connecticut, Department of Agricultural and Resource Economics, Charles J. Zwick Center for Food and Resource Policy.
- Aviv Nevo, 2003. "Measuring Market Power in the Ready-to-Eat Cereal Industry," Microeconomics 0303006, EconWPA.
- Nevo, Aviv, 1999. "Measuring Market Power in the Ready-to-Eat Cereal Industry," Competition Policy Center, Working Paper Series qt7cm5p858, Competition Policy Center, Institute for Business and Economic Research, UC Berkeley.
- Iimi, Atsushi, 2005. "Estimating demand for cellular phone services in Japan," Telecommunications Policy, Elsevier, vol. 29(1), pages 3-23, February.
- Hansen, Lars Peter, 1982. "Large Sample Properties of Generalized Method of Moments Estimators," Econometrica, Econometric Society, vol. 50(4), pages 1029-54, July.
- Reisinger, Markus, 2004. "Two-Sided Markets with Negative Externalities," Discussion Papers in Economics 478, University of Munich, Department of Economics.
- Kaiser, Ulrich & Wright, Julian, 2006.
"Price structure in two-sided markets: Evidence from the magazine industry,"
International Journal of Industrial Organization,
Elsevier, vol. 24(1), pages 1-28, January.
- Kaiser, Ulrich & Wright, Julian, 2004. "Price Structure in Two-sided Markets: Evidence from the Magazine Industry?," ZEW Discussion Papers 04-80, ZEW - Zentrum für Europäische Wirtschaftsforschung / Center for European Economic Research.
- Steven T. Berry, 1994. "Estimating Discrete-Choice Models of Product Differentiation," RAND Journal of Economics, The RAND Corporation, vol. 25(2), pages 242-262, Summer.
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