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The Impact of Integration on Productivity and Welfare Distortions Under Monopolistic Competition
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The Impact of Integration on Productivity and Welfare Distortions Under Monopolistic Competition

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  • Swati Dhingra
  • John Morrow

Abstract

A fundamental question in monopolistic competition theory is whether the market allocates resources efficiently. This paper generalizes the Spence-Dixit-Stiglitz framework to heterogeneous firms, addressing when the market provides optimal quantities, variety and productivity. Under constant elasticity demand, each firm prices above its average cost, yet we show market allocations are efficient. When demand elasticities vary, market allocations are not efficient and reflect the distortions of imperfect competition. After determining the nature of market distortions, we investigate how integration may serve as a remedy to imperfect competition. Both market distortions and the impact of integration depend on two demand side elasticities, and we suggest richer demand structures to pin down these elasticities. We also show that integration eliminates distortions, provided the post-integration market is sufficiently large.

Suggested Citation

  • Swati Dhingra & John Morrow, 2012. "The Impact of Integration on Productivity and Welfare Distortions Under Monopolistic Competition," CEP Discussion Papers dp1130, Centre for Economic Performance, LSE.
    • Handle: RePEc:cep:cepdps:dp1130
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    1. Peter Dixon & Michael Jerie & Maureen Rimmer, 2016. "Modern Trade Theory for CGE Modelling: The Armington, Krugman and Melitz Models," Journal of Global Economic Analysis, Center for Global Trade Analysis, Department of Agricultural Economics, Purdue University, vol. 1(1), pages 1-110, June.
    2. Maxim Goryunov & Sergey Kokovin & Takatoshi Tabuchi, 2022. "Continuous spatial monopolistic competition: matching goods with consumers," Economic Theory, Springer;Society for the Advancement of Economic Theory (SAET), vol. 74(3), pages 793-832, October.
    3. Igor Bykadorov & Andrea Ellero & Stefania Funari & Sergey Kokovin & Pavel Molchanov, 2016. "Painful Birth of Trade Under Classical Monopolistic Competition," HSE Working papers WP BRP 132/EC/2016, National Research University Higher School of Economics.
    4. Kristian Behrens & Yasusada Murata, 2011. "Trade, Competition, and Efficiency (revised version)," Cahiers de recherche 1118, CIRPEE.
    5. Monika Mrázová & J Peter Neary, 2019. "Selection Effects with Heterogeneous Firms," Journal of the European Economic Association, European Economic Association, vol. 17(4), pages 1294-1334.
    6. Costas Arkolakis & Arnaud Costinot & Dave Donaldson & Andrés Rodríguez-Clare, 2019. "The Elusive Pro-Competitive Effects of Trade," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 86(1), pages 46-80.
    7. Costinot, Arnaud & Rodríguez-Clare, Andrés, 2014. "Trade Theory with Numbers: Quantifying the Consequences of Globalization," Handbook of International Economics, in: Gopinath, G. & Helpman, . & Rogoff, K. (ed.), Handbook of International Economics, edition 1, volume 4, chapter 0, pages 197-261, Elsevier.
    8. Arnaud Costinot & Andrés Rodríguez‐Clare & Iván Werning, 2020. "Micro to Macro: Optimal Trade Policy With Firm Heterogeneity," Econometrica, Econometric Society, vol. 88(6), pages 2739-2776, November.
    9. Costas Arkolakis & Theodore Papageorgiou & Olga Timoshenko, 2018. "Firm Learning and Growth," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 27, pages 146-168, January.
      • Costas Arkolakis & Theodore Papageorgiou & Olga A. Timoshenko, 2015. "Firm Learning and Growth," Working Papers 2015-5, The George Washington University, Institute for International Economic Policy.
    10. Kichko, Sergey & Kokovin, Sergey & Zhelobodko, Evgeny, 2014. "Trade patterns and export pricing under non-CES preferences," Journal of International Economics, Elsevier, vol. 94(1), pages 129-142.
    11. Feenstra, Robert C., 2018. "Restoring the product variety and pro-competitive gains from trade with heterogeneous firms and bounded productivity," Journal of International Economics, Elsevier, vol. 110(C), pages 16-27.
    12. Evgeny Zhelobodko & Sergey Kokovin & Mathieu Parenti & Jacques‐François Thisse, 2012. "Monopolistic Competition: Beyond the Constant Elasticity of Substitution," Econometrica, Econometric Society, vol. 80(6), pages 2765-2784, November.
    13. Brendan Epstein & Alan Finkelstein Shapiro & Andres Gonzalez Gomez, 2017. "Financial Disruptions and the Cyclical Upgrading of Labor," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 26, pages 204-224, October.
    14. Melitz, Marc J. & Redding, Stephen J., 2014. "Heterogeneous Firms and Trade," Handbook of International Economics, in: Gopinath, G. & Helpman, . & Rogoff, K. (ed.), Handbook of International Economics, edition 1, volume 4, chapter 0, pages 1-54, Elsevier.
    15. Bawa, Siraj, 2017. "Corporate Taxation in the Open Economy without Pareto," MPRA Paper 80857, University Library of Munich, Germany, revised Aug 2017.
    16. Demidova, Svetlana, 2017. "Trade policies, firm heterogeneity, and variable markups," Journal of International Economics, Elsevier, vol. 108(C), pages 260-273.
    17. Opp, Marcus M. & Parlour, Christine A. & Walden, Johan, 2014. "Markup cycles, dynamic misallocation, and amplification," Journal of Economic Theory, Elsevier, vol. 154(C), pages 126-161.

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    More about this item

    Keywords

    Selection; monopolistic competition; efficiency; productivity; social welfare; demand elasticity;
    All these keywords.

    JEL classification:

    • F1 - International Economics - - Trade
    • L1 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance
    • D6 - Microeconomics - - Welfare Economics

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