With the use of a laboratory experiment, we show the effects of co-investments on coverage, competition and price collusion in regulated network industries. On the one hand, co-investments turn out not to be a significant driver of new infrastructure investments beyond the level achieved by...

We investigate the effects of alternative open access regimes on market performance. In particular, by means of an economic laboratory experiment we compare the market outcomes under unregulated wholesale competition, under a price-fixing rule (where firms must maintain their wholesale price for...

Flat rates are a prominent pricing scheme for telecommunications services and are often preferred by consumers although average costs would be lower in an alternative usage-based tariff. Reasons are that flat rates protect against unexpectedly high costs (insurance effect), are more likely to be...

This paper is intended as an introduction to the debate on net neutrality and as a progress report on the growing body of academic literature on this issue. Different non-net neutrality scenarios are discussed and structured along the two dimensions of network and pricing regime. With this...

At the Karlsruhe Institute of Technology (KIT), the Graduate School InformationManagement and Market Engineering (IME) which is financed by the GermanResearch Association (Deutsche Forschungsgemeinschaft, DFG), offers an interdisciplinarydoctoral program on the economic, technological and legal...

In this article we provide a seminal academic investigationof mobile telephony consumers’ perception of the recentlyintroduced cost cap tariff in comparison to corresponding payper-use and flatrate calling plans. Previous studies have identifiedseveral psychological effects through which...

Unternehmensportale sind in der Lage heterogene und verteilte Unternehmenssystemeund –daten zusammenzuführen, um so Prozessabläufe zu unterstützen odersogar zu automatisieren. Die Portaltechnologie birgt somit große Potentiale in Bezugauf Produktivitäts- und Effizienzsteigerungen. Der...

In this article we point at the large potentials that corporate community portals can have to support the business model of companies. In particular corporate community portals of the next generation are characterized by the integration of business intelligence tools which can facilitate or even...