We analyze the short- and long-run implications of third-degree price discrimination in input markets. In contrast to the extant literature, which typically assumes that the supplier is an unconstrained monopolist, in our model input prices are constrained by the threat of demand-side...

type="main" <p>We introduce a flexible model of telecommunications network competition with nonuniform calling patterns, accounting for the fact that customers tend to make most calls to a small set of similar people. Equilibrium call prices are distorted away from marginal cost, and competitive...</p>

We analyze the impact of two-way access charges on the incentives to invest in networks with different levels of quality. When quality has an impact on all calls initiated by customers (destined both on-net and off-net), we obtain a result of ``tacit collusion" even in a symmetric model with...