-quality menus to segment the market. We show that, contrary to the Coase conjecture for the homogeneous durable good monopoly …

We consider the regulation of a monopoly facing consumers that may evade payments, an important issue in public … utilities. To maximize total surplus, the regulator sets the price and socially costly transfers, ensuring that the monopoly …

nondiscrimination regulation that forces the ISP to provide an equal quality upgrade to both CPs, however, can reduce the ISP …

externality on the rest of the world as it induces entry of high-quality firms, but unilateral regulation lowers the terms of … formulation to quantify the welfare consequences of imposing the optimal regulation, the extent of the positive externalities …

We empirically assess the impact of the EU roaming regulation on mobile operators’ average revenues per user (ARPU) and …-level data we find that the regulation decreased mobile operator’s revenues per user, while it had no impact on tariffs during … the latest phase of the regulation …

The roam-like-at-home regulation (RLAH) eliminated all mobile roaming surcharges to Eu-ropean consumers travelling … within the European Economic Area (EEA). We measure the causal impact of the regulation on EEA roaming traffic, using the … revenues. To evaluate the welfare effects of the regulation, we develop a framework that includes consumer surplus, retail and …

solution. Then we consider a monopoly. Market power affects both output and sugar content, possibly in opposite directions, and …