Vertical separation in the freight railways sector may sacrifice significant economies of
integration. Economies of density suggest that corresponding benefits may be elusive. We …

The main purpose of this study is to analyze structural separation policies, especially vertical
(ie operation-infrastructure) and horizontal (ie passenger-freight service) separation. Using …

We consider a model with a vertically integrated monopolist network provider who faces rival
operators in the retail market. We examine the network operator's incentives for …

This paper is the first to explicitly test for the presence of a trade-off between static and
dynamic efficiency and a trade-off between vertical economies and competition in a …

We study an industry in which an upstream monopolist supplies an essential input at a
regulated price to several downstream firms. Legal unbundling means in our model that a …

Moving beyond most conventional thinking about energy security in Europe which revolves
around stability of supplies and the reliability of suppliers, this book presents the history of …

This paper studies the innovation response of upstream technology suppliers when their
downstream buyers transition from regulation to competition. By modeling the impact of the …

This paper studies the effects of introducing competition for local passenger railway markets
in the German state of Baden-Württemberg. We compare the evolution of the frequency of …

We study how vertical integration in a media market affects investments in premium content.
We show that a content provider provides the premium content exclusively to a platform …

Whether vertical separation of the rail industry creates demonstrable performance and
efficiency gains is an issue of ongoing economic analysis and public policy debate. To assist …