In antitrust cases as well as for regulated industries, the question of how to treat indirect constraint and captive sales correctly has become of major importance in Europe. The (im-)proper treatment of indirect constraints has lead the CFI to overturn the Commission's decision in the proposed...

We analyze the short- and long-run implications of third-degree price discrimination in input markets where downstream firms differ in their efficiency. In contrast to the extant literature, where the supplier is typically an unconstrained monopolist, in our model input prices are constrained by...

We re-consider the impact that regulation of call termination on mobile phones has had on mobile customers’ bills. Using a large panel covering 27 countries, we find that the “waterbed” phenomenon, initially observed until early 2006, becomes insignificant on average over the 10-year...

We re-consider the impact that regulation of call termination on mobile phones has had on mobile customers’ bills. Using a large panel covering 27 countries, we find that the “waterbed” phenomenon, initially observed until early 2006, has disappeared over the 10-year period, 2002-2011. We...

We re-consider the impact that regulation of call termination on mobile phones has had on mobile customers' bills. Using a large panel covering 27 countries, we find that the "waterbed" phenomenon, initially observed until early 2006, becomes insignificant on average over the 10-year period,...

This paper examines the impact of regulatory intervention to cut termination rates of calls from fixed lines to mobile phones. Under quite general conditions of competition, theory suggests that lower termination charges will result in higher prices for mobile subscribers, a phenomenon known as...

Promoting New Telecom Infrastructures examines how current telecom infrastructures are transforming from dedicated networks supporting either voice, data or broadcasting services to converged networks that support a wide variety of communication services, often denoted as Next Generation...

The distinguishing feature of two-sided markets is that the pricing structure, that is, the relative prices charged to each side, matters. Regulators need to understand and account for the interdependence of prices in both sides. Some interventions that lower the prices on one side can result in...

Interconnection rates are a key variable in telecommunications markets. Every call that is placed must be terminated by the network of the receiving party, thus the termination end has the characteristic of an economic bottleneck and is subject to regulation in many countries. This paper...