†© 1999 Michel Kerf and Damien Geradin.
† Special Assistant to the Vice-President, Private Sector Development and Infrastructure, The World Bank, Washington D.C.
‡‡ Associate Professor of Law, University of Liège Law School and Professor of Law, College of Europe, Bruges, Belgium. Director, Regulation and Competitiveness Project, Yale University. Mr. Geradin gratefully acknowledges the financial assistance of the "PAI," a research program initiated by the Belgian State, Prime Minister's Office, Science Policy Programming.
1. In the area of telecommunications, the fixed costs of establishing a fixed line local network are such that a single enterprise will generally be able to provide services to all users in a given area at lower costs than would two or more enterprises, each with its own network. For a discussion of the concept of natural monopoly, see generally WILLIAM W. SHARKEY, THE THEORY OF NATURAL MONOPOLY (1982).
2. A network externality is said to exist for a service if users of the service benefit when more people use it. Network externalities are present in the area of telecommunications since the value of a network increases, for each user, with the number of network subscribers. See Mark Amstrong, Competition in Telecommunications, 13 OXFORD REV. ECON. POL'Y 64-65, 67 (1997). As a result, for a given total number of subscribers, the value of a single network is much greater than the total value of several smaller unconnected networks. For a good discussion of the concept of network externalities, see Nicholas Economides, The Economics of Networks, 14 INT'L J. INDUS. ORG. 673 (1996) and Michael L. Katz & Carl Shapiro, Network Externalities, Competition, and Compatibility, 75 AM. ECON. REV. 424 (1985). A large list of published articles on network externalities can be found at <http://raven.stern.nyu.edu/networks/bibiof.html>.
3. See Alberto Heimler & Paolo Saba, Role and Enforcement of Competition Policy in Regulated Sectors, 1995 PROC. OF OECD/WORLD BANK CONF. ON COMPETITION & REG. IN NETWORK INDUS. (OECD 1995), 75, 78, available at <http://www.oecd.org/daf/clp/non-member_activities/bdpt102.htm>.
4. On the issue of cream-skimming, see Peter Smith, Subscribing to Monopoly: The Telecom Monopolist's Lexicon-Revisited, PUBLIC POL'Y FOR THE PRIVATE SECTOR, Note No. 53 (Sept. 1995), available at <http://www.worldbank.org/html/fpd/notes/53/53smith.html>.
5. See N. GREGORY MANKIW, PRINCIPLES OF ECONOMICS 308 (1998); RICHARD A. POSNER, ANTITRUST LAW : AN ECONOMIC PERSPECTIVE 8 (1976).
6. See ALFRED E. KAHN, THE ECONOMICS OF REGULATION: PRINCIPLES AND INSTITUTIONS Vol. I, at 3 (1971).
7. See Colin Scott, Institutional Competition and Coordination in the Process of Telecommunications Liberalization in JOSEPH MCCAHERY ET AL., INTERNATIONAL REGULATORY COMPETITION AND COORDINATION: PERSPECTIVES ON ECONOMIC REGULATION IN EUROPE AND THE UNITED STATES 383-84 (1996).
8. See, e.g., AHMED GALAL ET AL., WELFARE CONSEQUENCES OF SELLING PUBLIC ENTERPRISES-AN EMPIRICAL ANALYSIS (1994); IMPLEMENTING REFORMS IN THE TELECOMMUNICATIONS SECTOR-LESSONS FROM EXPERIENCE (Bjorn Wellenius & Peter A. Stern eds., 1994).
9. See James Bond, Telecommunications is Dead, Long Live Networking, PUBLIC POL'Y FOR THE PRIVATE SECTOR, Note No. 119 (July 1997), available at <http://www.worldbank.org/html/fpd/notes/119/119summary.html>.
10. As mentioned above, it is the fixed line local network which presents natural monopoly features because of the high fixed costs of setting up the network and the low marginal cost of adding an extra consumer, which together entail decreasing average costs. Thus, a single firm will have lower unit costs than two or more smaller firms. See supra note .
11. See Benjamin Lipschitz, Regulatory Treatment of Network Convergence: Opportunities and Challenges in the Digital Era, 7 MEDIA & POL'Y L. 14 (1998).
12. Competition between different providers of infrastructure services, such as telecommunications, might, for example, lead to wide price fluctuations which could be seen as disruptive. In activities such as the provision of local loop services, which are characterized by high fixed costs and low marginal costs, prices might be driven down to marginal costs during periods of intense competition between different network operators and might rise above total average costs when a firm is able to exercise some degree of market power.
13. See Helmut Cox, Problèmes du financement des services publics universels dans l'Union Européenne, SERVICES PUBLICS ET POLITIQUE INDUSTRIELLE EN EUROPE - NOUVEAUX DÉFIS ET NOUVELLE MISSIONS D'INTÉRÊT PUBLIC 83 (1996); Werner Neu & Ulrich Stumpf, Evaluating Compensation Requirements by Telecommunications Universal Service Providers: A New Challenge to Regulators, 26 COMM. & STRATEGIES 165 (1997).
14. See generally LAURENCE BANCEL-CHARENSOL, LA DÉRÉGLEMENTATION DES TÉLÉCOMMUNICATIONS D