The Economics of Product-Line Restrictions With an Application to the Network Neutrality Debate
AbstractWe examine the welfare effects of product-line restrictions, such as those called for by some proponents of network neutrality regulation. We find that restricting a monopoly supplier to a single product has the following effects: (a) consumers who would otherwise have consumed a low-quality variant are excluded from the market; (b) consumers "in the middle" of the market consume a higher and more efficient quality; and (c) consumers at the top of the market consume a lower and less efficient quality. Total surplus may rise or fall. We also examine a duopoly model and find that imposition of a single-product restriction always reduces welfare. Absent the restriction, the two firms engage in head-to-head competition across full product lines. In some circumstances, the restriction induces the two firms to offer identical products. The resulting loss of variety reduces welfare. In other circumstances, the restriction induces the firms to offer non-overlapping, or vertically differentiated, products. Here, the resulting loss of competition harms both consumers and economic efficiency. Lastly, we find that, to the extent that the regulation is intended to eliminate low-quality products, it may fail. Even though any one firm can offer only a single product, various firms can collectively offer a menu of products.
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product line; product variety; regulation; network neutrality;
Other versions of this item:
- Hermalin, Benjamin E. & Katz, Michael L., 2007. "The economics of product-line restrictions with an application to the network neutrality debate," Information Economics and Policy, Elsevier, vol. 19(2), pages 215-248, June.
- Hermalin, Benjamin E. & Katz, Michael, 2007. "The Economics of Product-Line Restrictions With an Application to the Network Neutrality Debate," Working paper 541, Regulation2point0.
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- Gabszewicz, Jean J & Laussel, Didier & Sonnac, Nathalie, 2002.
" Press Advertising and the Political Differentiation of Newspapers,"
Journal of Public Economic Theory,
Association for Public Economic Theory, vol. 4(3), pages 317-34.
- GABSZEWICZ, Jean J. & LAUSSEL, Didier & SONNAC, Nathalie, . "Press advertising and the political differentiation of newspapers," CORE Discussion Papers RP -1561, Université catholique de Louvain, Center for Operations Research and Econometrics (CORE).
- Caillaud Bernard & Hermalin Benjamin, 1993.
"The Use of an Agent in a Signalling Model,"
Journal of Economic Theory,
Elsevier, vol. 60(1), pages 83-113, June.
- Bernard Caillaud and Benjamin Hermalin., 1991. "The Use of an Agent in a Signalling Model," Economics Working Papers 91-183, University of California at Berkeley.
- Caillaud, Bernard & Hermalin, Benjamin, 1991. "The Use of an Agent in a Signaling Model," Department of Economics, Working Paper Series qt5481b61w, Department of Economics, Institute for Business and Economic Research, UC Berkeley.
- Rochet, Jean-Charles & Tirole, Jean, 2003.
"Platform Competition in Two-Sided Markets,"
IDEI Working Papers
152, Institut d'Économie Industrielle (IDEI), Toulouse.
- Champsaur, Paul & Rochet, Jean-Charles, 1989. "Multiproduct Duopolists," Econometrica, Econometric Society, vol. 57(3), pages 533-57, May.
- repec:att:wimass:9508 is not listed on IDEAS
- Caillaud, Bernard & Jullien, Bruno, 2003. " Chicken & Egg: Competition among Intermediation Service Providers," RAND Journal of Economics, The RAND Corporation, vol. 34(2), pages 309-28, Summer.
- De Fraja, Giovanni, 1996. "Product line competition in vertically differentiated markets," International Journal of Industrial Organization, Elsevier, vol. 14(3), pages 389-414, May.
- Walras, L. & Holmes, P., 1980. "The state and the railways," Journal of Public Economics, Elsevier, vol. 13(1), pages 81-100, February.
- Mussa, Michael & Rosen, Sherwin, 1978. "Monopoly and product quality," Journal of Economic Theory, Elsevier, vol. 18(2), pages 301-317, August.
- Simon P. Anderson & Stephen Coate, 2003.
"Market Provision of Broadcasting: A Welfare Analysis,"
Virginia Economics Online Papers
358, University of Virginia, Department of Economics.
- Simon P. Anderson & Stephen Coate, 2005. "Market Provision of Broadcasting: A Welfare Analysis," Review of Economic Studies, Oxford University Press, vol. 72(4), pages 947-972.
- Doyle, Chris & Smith, Jennifer C., 1998. "Market structure in mobile telecoms: qualified indirect access and the receiver pays principle," Information Economics and Policy, Elsevier, vol. 10(4), pages 471-488, December.
- Varian, Hal R, 1985. "Price Discrimination and Social Welfare," American Economic Review, American Economic Association, vol. 75(4), pages 870-75, September.
- Brander, James A & Eaton, Jonathan, 1984.
"Product Line Rivalry,"
American Economic Review,
American Economic Association, vol. 74(3), pages 323-34, June.
- A. Michael Spence, 1975. "Monopoly, Quality, and Regulation," Bell Journal of Economics, The RAND Corporation, vol. 6(2), pages 417-429, Autumn.
- Shaked, Avner & Sutton, John, 1982. "Relaxing Price Competition through Product Differentiation," Review of Economic Studies, Wiley Blackwell, vol. 49(1), pages 3-13, January.
- Michael L. Katz, 1980. "Multiplant Monopoly in a Spatial Market," Bell Journal of Economics, The RAND Corporation, vol. 11(2), pages 519-535, Autumn.
- Raymond J. Deneckere & R. Preston McAfee, 1996.
Journal of Economics & Management Strategy,
Wiley Blackwell, vol. 5(2), pages 149-174, 06.
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