We develop a model that examines the capital structure and investment decisions of regulated firms in a setting that incorporates two key institutional features of the public utilities sector in many countries: firms are partially owned by the state and regulators are not necessarily...

We construct a comprehensive panel data of 92 publicly traded European utilities over the period 1994-2005 in order to study the relationship between capital structure, regulated prices, and firm value, and examine if and how this interaction is affected by ownership structure and regulatory...

This Paper analyses the incentives that operators have to invest in facilities with different levels of quality. A network of better quality is more expensive but may give an important edge to an operator when competing against a rival. We extend the framework of Armstrong-Laffont-Rey-Tirole by...

We analyze competition between vertically integrated infrastructure operators that provide access in different geographical areas. A regulator may impose a uniform access price, set local access rates, or deregulate access locally. We analyze the impact of these alternative regulatory regimes on...

Often, fixed-line incumbents also own the largest mobile network. We consider the effect of this joint ownership on market outcomes. Our model predicts that while fixed-to-mobile call prices to the integrated mobile network are more efficient than under separation, those to rival mobile networks...

We investigate cooperative investment for the deployment of a new infrastructure, and how it interacts with access obligations and demand uncertainty. Co-investment increases total coverage only if service differentiation and/or cost savings from joint investment, in particular due to high...

We develop a model of information exchange between calling parties. We characterize the equilibrium when two interconnected networks compete for such users by charging both for outgoing and incoming calls. We show that networks have reduced incentives to use off-net price discrimination to...