Applications such as iMessage, KakaoTalk, LINE, Signal, Skype, Snapchat, Threema, Viber, WhatsApp and WeChat have become an increasingly popular means of personal and business interaction. Surprisingly little academic effort has gone into understanding the nature and origin of these...

We study effects on prices and quantities of a takeover in the rather concentrated German interurban bus industry. We empirically asses the effect of the takeover of Postbus by Flixbus on industry key features, using a route-level price data set containing prices for more than 6,000 routes in...

This paper analyses how different types of access regulation to next generation networks affect investments and consumer welfare. The model consists of an investment stage with uncertain returns and subsequent quantity competition. The access price is a function of investment costs and the...

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...

Technical innovation has bestowed us with an abundance of channels for audiovisual media providers. More and more platforms for distributing content have become available. Cable and satellite systems have significantly increased their capacity in recent years. The quality of IPTV (Television...

Congress recently has passed the Postal Accountability and Enhancement Act, which leaves most elements of the current postal regulatory framework (postal monopoly, state owned enterprise) unaltered. Similar regulatory frameworks have been established in the U.S. and the European Community....

We study competition in the German interurban bus industry two years after its liberalization in January 2013. In addition to a brief characterization of the liberalization process and several general market developments, we provide a detailed analysis of selected market characteristics such as...

We provide an empirical assessment of the German interurban bus industry two years after its deregulation in January 2013. In addition to a general description of key developments of the industry, we use a unique route-level price data set to study both competitive interaction in general and the...

Minimum capital requirement regulation forces banks to refund a substantial amount of their investments with equity. This creates a buffer against losses, but also in- creases the cost of funding. If higher refunding costs translate into higher loan interest rates, then borrowers are likely to...

Can regulation solve problems arising from a natural monopoly? This paper analyzes whether "unbundling", referring to regulations that enforce sharing of natural monopolistic infrastructure, prevents entrants from building new infrastructure. It models and estimates a dynamic entry game to...