Incentive Regulation and The Cost Structure of The Local Telephone Exchange Network

F. Gasmi1, J.J. Laffont1, W.W. Sharkey2
1Université des Sciences Sociales, Toulouse Cédex, France
2Washington, D.C., USA

Tóm tắt

This paper combines an engineering process model of the cost of local exchange telecommunications firms with an analytical model of optimal incentive regulation (with ex post cost observability), to study empirically the properties of the optimal regulatory mechanism. Relying on detailed properties of the cost function, we examine three issues: (i) the extent of natural monopoly when informational rents associated with regulation are taken into account; (ii) the extent of incentive correction, which expresses the divergence of pricing under the optimal mechanism from optimal pricing under complete information; (iii) the implementation of optimal regulation through a menu of linear contracts. Our findings are that, for fixed territory, strong economies of scale allow local exchange telecommunications to retain monopoly characteristics even when the (informational) costs of regulation are properly accounted for, the incentive correction term is small in magnitude, and that optimal regulation can be well approximated through relatively simple linear contracts.

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Tài liệu tham khảo

Baron, D., and R. Myerson. 1982. “Regulating a monopolist with unknown costs.” Econometrica 50: 911–930.

Chenery, H.B. 1949. “Engineering production functions.” Quarterly Journal of Economics 63: 507–531.

Christensen, L.R., D. Cummings, and P.E. Schoech. 1983. “Econometric estimation of scale economies in telecommunications.” In Economic Analysis of Telecommunications: Theory and Applications, edited by L. Courville, A. de Fontenay, and R. Dobell, pages 27–53.

Evans, D.S. and J.J. Heckman. 1983. “Multiproduct cost function estimates and natural monopoly tests for the Bell System.” In Breaking Up Bell, edited by D.S. Evans, pages 253–282. Amsterdam: North Holland.

Forsund, F.R. 1995. “Engineering productions functions: Chocolate production revisited.” Mimeo, Department of Economics, University of Oslo.

Frisch, R. 1935. “The Principal of substitution. An example of its application in the chocolate industry.” Nordisk Tidskrift for Teknisk konomi 12–27.

Fuss, M. and L. Waverman. 1978. “Multi-product, multi-input cost functions for a regulated utility: the case of telecommunications in Canada.” Working Paper N$ 7810, Institute for Policy Analysis, University of Toronto.

Gabel, D., and M., Kennet. 1991. “Estimating the cost structure of the local telephone exchange network.” National Regulatory Research Institute Repport N$ 91-16.

Gabel, D. and M., Kennet. 1994. “Economies of scope in the local exchange market,” Journal of Regulatory Economics 6: 381–398.

Gasmi, F., M., Ivaldi and J.J. Laffont. 1994. “Rent extraction and incentives for efficiency in recent regulatory proposals.” Journal of Regulatory Economics 6:151–176.

Mitchell, B.M. 1990. “Incremental costs of telephone access and local use.” Rand Report R-3909—ICTF.

Laffont, J.J., and J. Tirole. 1986. “Using cost information to regulate firms.” Journal of Political Economy 94:1–49.

Laffont, J.J., and J. Tirole. 1993. A Theory of Incentives in Procurement and Regulation. MIT Press.

Schmalensee, R. 1989. “Good regulatory regimes.” Rand Journal of Economics 20: 417–436.

Shin, R.T. and J.S., Ying. 1992. “Unnatural monopolies in local telephone,” Rand Journal of Economics 23(2): 171–183.

Smith, V.L. 1957. “Engineering data and statistical techniques in the analysis of production and technological change: Fuel requirements in the trucking industry.” Econometrica 25: 281–301.

Taylor, L.D. 1994. Telecommunications Demand in Theory and Practice. Kluwer Academic Publishers.

Wunsch P. 1994. “Estimating menus of linear contracts for mass transit firms.” Mimeo, CORE, Louvain-La-Neuve, belgium.