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Product Diversity, Strategic Interactions and Optimal Taxation

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  • V. LEWIS

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Abstract

The entry of a new product increases consumer surplus through additional product di- versity but decreases firm profits. In markets where .rm entry intensi.es competition and reduces markups through strategic interactions, we expect entry to be excessively high. In a simple general equilibrium model, this is true for industries with very similar goods. If goods are instead highly differentiated, entry is below optimum. In both cases, the optimal policy is a labour subsidy and a tax on entry. If labour subsidies are unavailable, subsidising entry is optimal for industries with low degrees of product differentiation.

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Bibliographic Info

Paper provided by Ghent University, Faculty of Economics and Business Administration in its series Working Papers of Faculty of Economics and Business Administration, Ghent University, Belgium with number 10/661.

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Length: 10 pages
Date of creation: Jul 2010
Date of revision:
Handle: RePEc:rug:rugwps:10/661

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Keywords: product diversity; entry; strategic interactions; optimal taxation;

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  1. Sanjay K. Chugh & Fabio Ghironi, 2011. "Optimal Fiscal Policy with Endogenous Product Variety," NBER Working Papers 17319, National Bureau of Economic Research, Inc.
  2. Christopoulou, Rebekka & Vermeulen, Philip, 2008. "Markups in the euro area and the US over the period 1981-2004: a comparison of 50 sectors," Working Paper Series 0856, European Central Bank.
  3. Jeffrey R. Campbell & Hugo Hopenhayn, 2003. "Market size matters," Working Paper Series WP-03-12, Federal Reserve Bank of Chicago.
  4. Marc Melitz & Ghironi, Fabio & Florin Bilbiie, 2006. "Monopoly Power and Endogenous Variety in Dynamic Stochastic General Equilibrium: Distortions and Remedies," Working Paper 14401, Harvard University OpenScholar.
  5. David Weinstein & Christian Broda, 2004. "Globalization and the Gains from Variety," 2004 Meeting Papers 530, Society for Economic Dynamics.
  6. Christian Broda & David E. Weinstein, 2007. "Product Creation and Destruction: Evidence and Price Implications," NBER Working Papers 13041, National Bureau of Economic Research, Inc.
  7. Riccardo DiCecio & Levon Barseghyan, 2010. "Entry Costs, Industry Structure, and Cross-Country Income and TFP Differences," 2010 Meeting Papers 964, Society for Economic Dynamics.
  8. Bergin, Paul R. & Corsetti, Giancarlo, 2008. "The extensive margin and monetary policy," Journal of Monetary Economics, Elsevier, vol. 55(7), pages 1222-1237, October.
  9. Federico Etro & Andrea Colciago, 2010. "Endogenous Market Structures and the Business Cycle," Economic Journal, Royal Economic Society, vol. 120(549), pages 1201-1233, December.
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