This paper surveys the economics of market power from the perspective of contract theory. Various practices that might be of competition policy concern including price discrimination, quantity discounts, bundling, vertical integration, and contracts with customers -- are discussed in terms of...

Many competition policy issues in regulated industries concern the structure of prices charged by multiproduct firms--for example price discrimination, non-linear pricing, cross-subsidies, and network access pricing. This article first sets out the (Ramsey) principles of optimal pricing to...

This paper discusses the scope for competition in the telecommunications industry, taking into account the features of natural monopoly, network externalities, and customer inertia. Recent policy towards competition in the industry in the UK is surveyed, with an emphasis on access pricing and...