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The Welfare Effects of Third-Degree Price Discrimination in a Differentiated Oligopoly

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  • Takanori Adachi
  • Noriaki Matsushima

Abstract

This paper studies the relationship between horizontal product differentiation and the welfare effects of third-degree price discrimination in oligopoly. By deriving linear demand from a representative consumer's utility and focusing on the symmetric equilibrium of a pricing game, we characterize the conditions relating to such demand properties as substitutability and complementarity for price discrimination to improve social welfare. In particular, we show that price discrimination can improve social welfare if firms' brands are substitutes in a market where the discriminatory price is higher and complements in one where it is lower, but welfare never improves in the reverse situation. We verify, however, that consumer surplus is never improved by price discrimination; welfare improvement by price discrimination is solely due to an increase in the firms' profits. This means that there is no chance that firms suffer from a "prisoners' dilemma," that is, firms are better off by switching from uniform pricing to price discrimination.

Suggested Citation

  • Takanori Adachi & Noriaki Matsushima, 2011. "The Welfare Effects of Third-Degree Price Discrimination in a Differentiated Oligopoly," ISER Discussion Paper 0800, Institute of Social and Economic Research, Osaka University.
    • Handle: RePEc:dpr:wpaper:0800
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    References listed on IDEAS

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    1. repec:bla:jindec:v:50:y:2002:i:2:p:235 is not listed on IDEAS
    2. Belleflamme,Paul & Peitz,Martin, 2015. "Industrial Organization," Cambridge Books, Cambridge University Press, number 9781107687899.
    3. Iñaki Aguirre & Simon Cowan & John Vickers, 2010. "Monopoly Price Discrimination and Demand Curvature," American Economic Review, American Economic Association, vol. 100(4), pages 1601-1615, September.
    4. Neven, Damien J & Phlips, Louis, 1985. "Discriminating Oligopolists and Common Markets," Journal of Industrial Economics, Wiley Blackwell, vol. 34(2), pages 133-149, December.
    5. Krishnendu Ghosh Dastidar, 2006. "On Third‐Degree Price Discrimination In Oligopoly," Manchester School, University of Manchester, vol. 74(2), pages 231-249, March.
    6. Kenneth S. Corts, 1998. "Third-Degree Price Discrimination in Oligopoly: All-Out Competition and Strategic Commitment," RAND Journal of Economics, The RAND Corporation, vol. 29(2), pages 306-323, Summer.
    7. Schwartz, Marius, 1990. "Third-Degree Price Discrimination and Output: Generalizing a Welfare Result," American Economic Review, American Economic Association, vol. 80(5), pages 1259-1262, December.
    8. Holmes, Thomas J, 1989. "The Effects of Third-Degree Price Discrimination in Oligopoly," American Economic Review, American Economic Association, vol. 79(1), pages 244-250, March.
    9. Varian, Hal R, 1985. "Price Discrimination and Social Welfare," American Economic Review, American Economic Association, vol. 75(4), pages 870-875, September.
    10. Jerry A. Hausman & Jeffrey K. MacKie-Mason, 1988. "Price Discrimination and Patent Policy," RAND Journal of Economics, The RAND Corporation, vol. 19(2), pages 253-265, Summer.
    11. Simon Cowan, 2007. "The welfare effects of third-degree price discrimination with nonlinear demand functions," RAND Journal of Economics, RAND Corporation, vol. 38(2), pages 419-428, June.
    12. Igal Hendel & Aviv Nevo, 2013. "Intertemporal Price Discrimination in Storable Goods Markets," American Economic Review, American Economic Association, vol. 103(7), pages 2722-2751, December.
    13. Belleflamme,Paul & Peitz,Martin, 2010. "Industrial Organization," Cambridge Books, Cambridge University Press, number 9780521681599, November.
    14. Schmalensee, Richard, 1981. "Output and Welfare Implications of Monopolistic Third-Degree Price Discrimination," American Economic Review, American Economic Association, vol. 71(1), pages 242-247, March.
    15. Shy,Oz, 2008. "How to Price," Cambridge Books, Cambridge University Press, number 9780521715645, September.
    16. Marcus Asplund & Rickard Eriksson & Niklas Strand, 2008. "Price Discrimination In Oligopoly: Evidence From Regional Newspapers," Journal of Industrial Economics, Wiley Blackwell, vol. 56(2), pages 333-346, June.
    17. Blundell,Richard & Newey,Whitney K. & Persson,Torsten (ed.), 2006. "Advances in Economics and Econometrics," Cambridge Books, Cambridge University Press, number 9780521871525, September.
    18. Armstrong, Mark, 2006. "Price discrimination," MPRA Paper 4693, University Library of Munich, Germany.
    19. Ikeda, Takeshi & Toshimitsu, Tsuyoshi, 2010. "Third-degree price discrimination, quality choice, and welfare," Economics Letters, Elsevier, vol. 106(1), pages 54-56, January.
    20. Galera, Francisco & Zaratiegui, Jesus M., 2006. "Welfare and output in third-degree price discrimination: A note," International Journal of Industrial Organization, Elsevier, vol. 24(3), pages 605-611, May.
    21. Asplund, Marcus & Eriksson, Rickard & Strand, Niklas, 2001. "Price Discrimination in Oligopoly: Evidence from Swedish Newspapers," SSE/EFI Working Paper Series in Economics and Finance 468, Stockholm School of Economics, revised 01 Jan 2007.
    22. Layson, Stephen, 1988. "Third-Degree Price Discrimination, Welfare and Profits: A Geometrical Analysis," American Economic Review, American Economic Association, vol. 78(5), pages 1131-1132, December.
    23. Blundell,Richard & Newey,Whitney K. & Persson,Torsten (ed.), 2006. "Advances in Economics and Econometrics," Cambridge Books, Cambridge University Press, number 9780521692083, September.
    24. E. Glen Weyl & Michal Fabinger, 2013. "Pass-Through as an Economic Tool: Principles of Incidence under Imperfect Competition," Journal of Political Economy, University of Chicago Press, vol. 121(3), pages 528-583.
    25. Liu Qihong & Serfes Konstantinos, 2011. "Third-Degree Price Discrimination," Journal of Industrial Organization Education, De Gruyter, vol. 5(1), pages 1-23, March.
    26. Simon Cowan, 2012. "Third-Degree Price Discrimination and Consumer Surplus," Journal of Industrial Economics, Wiley Blackwell, vol. 60(2), pages 333-345, June.
    27. Tomohisa Okada & Takanori Adachi, 2013. "Third-Degree Price Discrimination, Consumption Externalities, and Market Opening," Journal of Industry, Competition and Trade, Springer, vol. 13(2), pages 209-219, June.
    28. Takeshi Ikeda & Tatsuhiko Nariu, 2009. "Third-Degree Price Discrimination in the Presence of Asymmetric Consumption Externalities," Journal of Industry, Competition and Trade, Springer, vol. 9(3), pages 251-261, September.
    29. Cheung, Francis K & Wang, Xinghe, 1997. "The Output Effect under Oligopolistic Third Degree Price Discrimination," Australian Economic Papers, Wiley Blackwell, vol. 36(68), pages 23-30, June.
    30. Xavier Vives, 2001. "Oligopoly Pricing: Old Ideas and New Tools," MIT Press Books, The MIT Press, edition 1, volume 1, number 026272040x, April.
    31. Cowan, Simon & Vickers, John & Aguirre Pérez, Iñaki, 2009. "Monopoly Price Discrimination and Demand Curvature," IKERLANAK 2009-39, Universidad del País Vasco - Departamento de Fundamentos del Análisis Económico I.
    32. Stole, Lars A., 2007. "Price Discrimination and Competition," Handbook of Industrial Organization, in: Mark Armstrong & Robert Porter (ed.), Handbook of Industrial Organization, edition 1, volume 3, chapter 34, pages 2221-2299, Elsevier.
    33. Matthew Grennan, 2013. "Price Discrimination and Bargaining: Empirical Evidence from Medical Devices," American Economic Review, American Economic Association, vol. 103(1), pages 145-177, February.
    34. repec:bla:econom:v:72:y:2005:i:285:p:171-178 is not listed on IDEAS
    35. repec:bla:jindec:v:46:y:1998:i:4:p:511-24 is not listed on IDEAS
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    Citations

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    Cited by:

    1. Akio Kawasaki, 2022. "Pricing Strategies and Partial Privatization Policy Based on Complementary Competitive Market," Journal of Industry, Competition and Trade, Springer, vol. 22(1), pages 99-123, March.
    2. Aguirre, Iñaki, 2017. "Cournot Oligopoly, Price Discrimination and Total Output," MPRA Paper 80166, University Library of Munich, Germany.
    3. Aguirre Iñaki, 2016. "On the Economics of the “Meeting Competition Defense” Under the Robinson–Patman Act," The B.E. Journal of Economic Analysis & Policy, De Gruyter, vol. 16(3), pages 1213-1238, September.
    4. Gyódi Kristóf & Sobolewski Maciej & Ziembiński Michał, 2017. "What Drives Price Dispersion in the European E-commerce Industry?," Central European Economic Journal, Sciendo, vol. 3(50), pages 53-71, December.
    5. Aguirre, Iñaki & Yenipazarli, Arda, 2022. "A Rationale for the “Meeting Competition Defense” when Competitive Pressure Varies Across Markets," MPRA Paper 113746, University Library of Munich, Germany.
    6. Miklós-Thal, Jeanine & Shaffer, Greg, 2021. "Third-degree price discrimination in oligopoly with endogenous input costs," International Journal of Industrial Organization, Elsevier, vol. 79(C).
    7. Akio Kawasaki, 2023. "Pricing Strategies and Partial Privatization Policy," Review of Industrial Organization, Springer;The Industrial Organization Society, vol. 62(3), pages 293-319, May.
    8. Aguirre, Iñaki, 2019. "Oligopoly price discrimination, competitive pressure and total output," Economics - The Open-Access, Open-Assessment E-Journal (2007-2020), Kiel Institute for the World Economy (IfW Kiel), vol. 13, pages 1-16.
    9. Amarjyoti Mahanta, 2016. "Contemporaneous Most-Favoured-Customer Pricing Policy vs. Price Discrimination in a Differentiated Product Duopoly Market," Economics Bulletin, AccessEcon, vol. 36(1), pages 75-83.
    10. Francisco Galera & Pedro Mendi & Juan Carlos Molero, 2017. "Quality Differences, Third-Degree Price Discrimination, And Welfare," Economic Inquiry, Western Economic Association International, vol. 55(1), pages 339-351, January.
    11. Adachi, Takanori, 2023. "A sufficient statistics approach for welfare analysis of oligopolistic third‐degree price discrimination," International Journal of Industrial Organization, Elsevier, vol. 86(C).
    12. Aguirre Pérez, Iñaki, 2011. "Multimarket Competition and Welfare Effects of Price discrimination," IKERLANAK info:eu-repo/grantAgreeme, Universidad del País Vasco - Departamento de Fundamentos del Análisis Económico I.
    13. Akio Kawasaki, 2020. "Airport pricing strategy by hub airports: does the number of local airports matter?," Asia-Pacific Journal of Regional Science, Springer, vol. 4(3), pages 835-857, October.
    14. Guo, Wen-Chung & Lai, Fu-Chuan, 2022. "Price discrimination under online–offline competition," Economics Letters, Elsevier, vol. 216(C).
    15. Zheng Zhang & Yingtong Wang & Qingchun Meng & Qiang Han, 2022. "Impact of Third-Degree Price Discrimination on Welfare under the Asymmetric Price Game," Mathematics, MDPI, vol. 10(8), pages 1-16, April.
    16. Takanori ADACHI, 2022. "Recent Advances in the Theory of Third-Degree Price Discrimination: A Brief Survey," Discussion papers e-22-006, Graduate School of Economics , Kyoto University.

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    More about this item

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • L11 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Production, Pricing, and Market Structure; Size Distribution of Firms
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets

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