We analyze the incentives of a telecommunications incumbent to invest and give access to a downstream entrant to a next generation network, NGN. We model the industry as a duopoly, where a vertically integrated incumbent and a downstream entrant, that requires access to the incumbent's network,...

In this article we discuss the role of cable television networks and their ownership structure, in promoting competition in the local access market. An upgraded cable network can o¤er telecommunication services, and therefore can compete with the public switched telephone network. First, we...

In this article, we analyze the product differentiation decision of a downstream entrant that purchases access to a bottleneck input from one of two vertically integrated incumbents, who will compete with him in the downstream market. We develop a three-stage model, where first an entrant...

In this paper, we discuss the role of cable television networks and their ownership structure in promoting competition in the local access market. First, we show that the dual ownership of a local telephone network and a cable network, compared with separate ownership, may increase or decrease...

In this article, we discuss several aspects related to the entry of mobile virtual network operators. Some aspects, such as entry barriers and exclusionary practices, relate to the entry process itself. Other aspects, such as prices or the characteristics of the entrant’s product, relate to...

In this article, we analyze the incentives of vertically integrated oligopolists to concede access to their bottleneck inputs to an entrant in the downstream retail market. We develop a two-stage model, where in the first stage a downstream entrant negotiates an access price with three...

The European Commission believes that for the regulation of next generation fixed telecommunications networks the continuity approach is preferable to the equality of access approach and the no-regulation approach. According to the European Commission, (i) functional separation eliminates...

We analyze the incentives of a vertically integrated firm, which is a regulated monopolist in the wholesale market and competes with an entrant in the retail market, to invest and to give access to a new wholesale technology. The new technology represents a non-drastic innovation that produces...

We analyze if two-part access tariffs solve the dynamic consistency problem of the regulation of next generation networks. We model the industry as a duopoly, where a vertically integrated incumbent and a downstream entrant, that requires access to the incumbent's network, compete on Hotelling's...

We analyze the impact of network neutrality regulation on: (i) competition between CPs, and on (ii) ISPs. incentives to invest. We consider both competition between ISPs and between CPs and show that, if ISPs can o¤er network services of different quality to CPs, they prefer to sell the highest...