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Differentiated networks: equilibrium and efficiency

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  • Rossella Argenziano

Abstract

We consider a model of price competition in a duopoly with product differentiation and network effects. In the efficient allocation, both networks are active and the firm with the highest expected quality has the largest market share. To characterize the equilibrium allocation, we derive necessary and sufficient conditions for uniqueness of the equilibrium of the coordination game played by consumers for given prices. The equilibrium allocation differs from the efficient one for two reasons. First, the equilibrium allocation of consumers to the networks is too balanced, because consumers fail to internalize network externalities. Second, if access to the networks is priced by strategic firms, then the product with the highest expected quality is also the most expensive. This further reduces the asymmetry between market shares and therefore social welfare. Copyright (c) 2008, RAND.

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Bibliographic Info

Article provided by RAND Corporation in its journal The RAND Journal of Economics.

Volume (Year): 39 (2008)
Issue (Month): 3 ()
Pages: 747-769

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Handle: RePEc:bla:randje:v:39:y:2008:i:3:p:747-769

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References

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  1. Bruno Jullien, 2011. "Competition in Multi-sided Markets: Divide and Conquer," American Economic Journal: Microeconomics, American Economic Association, vol. 3(4), pages 186-220, November.
  2. Matthew Mitchell & Andrzej Skrzypacz, 2006. "Network externalities and long-run market shares," Economic Theory, Springer, vol. 29(3), pages 621-648, November.
  3. Andre de Palma & Luc Leruth, 1989. "Equilibrium in Competing Networks with Differentiated Products," Discussion Papers 814, Northwestern University, Center for Mathematical Studies in Economics and Management Science.
  4. Anderson,S.P. & de Palma,A., 1995. "Product Diversity in Asymmetric Oligopoly:Is the Quality of Consumer Goods Too Low?," Papers 9521, Paris X - Nanterre, U.F.R. de Sc. Ec. Gest. Maths Infor..
  5. Baake, Pio & Boom, Anette, 2001. "Vertical product differentiation, network externalities, and compatibility decisions," International Journal of Industrial Organization, Elsevier, vol. 19(1-2), pages 267-284, January.
  6. Mathias Dewatripont & Lars Peter Hansen & Stephen Turnovsky, 2003. "Advances in economics and econometrics: the eighth world congress," ULB Institutional Repository 2013/9557, ULB -- Universite Libre de Bruxelles.
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Citations

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Cited by:
  1. Suleymanova Irina & Wey Christian, 2011. "Bertrand Competition in Markets with Network Effects and Switching Costs," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 11(1), pages 1-58, September.
  2. Jullien, Bruno & Pavan, Alessandro, 2013. "Platform Pricing under Dispersed Information," IDEI Working Papers 793, Institut d'Économie Industrielle (IDEI), Toulouse.
  3. Laussel, Didier & Resende, Joana, 2014. "Dynamic price competition in aftermarkets with network effects," Journal of Mathematical Economics, Elsevier, vol. 50(C), pages 106-118.
  4. Navarro, Noemí, 2012. "Price and quality decisions under network effects," Journal of Mathematical Economics, Elsevier, vol. 48(5), pages 263-270.
  5. Hagiu, Andrei & Hałaburda, Hanna, 2014. "Information and two-sided platform profits," International Journal of Industrial Organization, Elsevier, vol. 34(C), pages 25-35.
  6. Vitor Miguel Ribeiro & João Correia-da-Silva & Joana Resende, 2014. "Nesting Vertical and Horizontal Differentiation in Two-Sided Markets," FEP Working Papers 535, Universidade do Porto, Faculdade de Economia do Porto.
  7. Griva, Krina & Vettas, Nikolaos, 2011. "Price competition in a differentiated products duopoly under network effects," Information Economics and Policy, Elsevier, vol. 23(1), pages 85-97, March.
  8. Kerstan, Sven & Kretschmer, Tobias & Muehlfeld, Katrin, 2012. "The dynamics of pre-market standardization," Information Economics and Policy, Elsevier, vol. 24(2), pages 105-119.
  9. Frankel, David M., 2012. "Recurrent crises in global games," Journal of Mathematical Economics, Elsevier, vol. 48(5), pages 309-321.
  10. Bruno Jullien, 2011. "Competition in Multi-sided Markets: Divide and Conquer," American Economic Journal: Microeconomics, American Economic Association, vol. 3(4), pages 186-220, November.

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