This paper presents a tractable model of network competition with many firms, elastic subscriber demand, off-net price discrimination, call externalities, and cost and market share asymmetries. We characterize stability in expectations and equilibrium under firm- and market-level network...

The speed of market penetration (i.e. diffusion) is an important summary measure of how well the market works for potential consumers of a new product. This paper identifies the structural features associated with rapid diffusion of mobile telephony. We use a sample of thirty countries over the...

This article combines a discrete choice model of demand for residential local telephone access and an optimal price regulation model to estimate the welfare weights that state regulators implicitly place on consumers with different incomes and locations. I find no evidence of a bias towards...

Although we have many tools to understand the effect of regulation on firm entry, we know little about the importance of actual regulation enforcement. For this purpose, this paper uses data from Spain's local television industry from 1995 through 2001, which provide a unique opportunity for...

This paper contributes to the policy debate about the optimal termination charge when penetration rates are explicitly taken into account. Although lowering termination charges towards cost leads to more efficient usage, its impact on consumer surplus is ambiguous since it induces an increase in...

We examine the incentives of a monopolistic search engine, funded by advertising, to provide reliable search results. We distinguish two types of search results: sponsored and organic (not-paid-for). Organic results are most important in searches for online content, while sponsored results are...

We reconsider the question of the optimal level of termination fees between communication networks in the context of heterogeneous usage and elastic participation. The interaction between these two features yields new insights; in our model: i) The profit maximizing reciprocal termination fee is...

In this paper, we analyze the incentives of an incumbent and an entrant to migrate from an “old” technology to a “new” technology, and discuss how the terms of wholesale access affect this migration. We show that the coverage of the new technology varies non-monotonically with the access...

We provide an efficiency justification for the imposition of the uniform pricing constraint in universal service obligations (USO), where USO are defined as a set of constraints imposed on firms belonging to a network industry. In addition to the uniform pricing (UP) constraint, which is an...