Abstract In markets with competing interconnected networks like mobile telecommunication markets investments affect the investor’s and also any competitors’ profits. In a theoretical model it is shown that cost-reducing investments reduce the investor’s termination rates and increase...

This paper considers the impact of European telecom regulation on the value of affected companies. Employing a repeating ARGARCH model, I compare the effect of three types of regulation which are categorized based on the addressed subject, i.e. cross-market, country-specific and company-specific...

The interplay of infrastructure supply and demand is of central interest in line with Web 2.0. As the role of customers turns from a service users’ role to an information providers’ role, the traffic on existing lines increases and, simultaneously, customers’ demand for high-quality...

Telecommunication infrastructure availability at an adequate quality level has considerably changed communication habits since the 1990s. The physical infrastructure and its quality are the key prerequisites for higher-level service infrastructure (such as the internet) or offered services (such...

European mobile communication markets are two-stage markets which are composed of the infrastructure (the network and its components) and the service markets (telephony, mobile internet, SMS). In contrast to most other network-based markets there are multiple fully integrated providers which...

This paper considers the impact of European telecom regulation on the value of affected companies. Employing a repeating AR-GARCH model, I compare the effect of three types of regulation which are categorized based on the addressed subject, i.e. cross-market, country-specific and...

The interplay of infrastructure supply and demand is of central interest in line with Web 2.0. As the role of customers turns from a service users' role to an information providers' role, the traffic on existing lines increases and, simultaneously, customers' demand for high-quality...

We use publicly available price data from the German cement industry to estimate the cartel-induced price increase. We apply two different comparator-based approaches – the ‘before-and-after' approach and the ‘difference-in-differences' approach – and especially study the impact of...