Despite the mixed empirical evidence, many economists stillhold to the view that Internet will promote competition betweenfirms,thereby lowering prices and increasing economic welfare. This paperpresents a search model that provides a different view. We analyzethemarket for a homogeneous good...

We consider the problem of estimating the lifetime value of customers, when a large number of features are present in the data. In order to measure lifetime value we use survival analysis models to estimate customer tenure. In such a context, a number of classical modelling challenges arise. We...

This paper discusses how ICT and emerging electronic commerce in consumer products influence the relative efficiency in production of households and firms, resulting in changes in the division of tasks between these two types of agents. Increased information and competence of households, in...

Neben den tiefgreifenden Veränderungen bei der Stromerzeugung stellt die Energiewende vor allem die Bereiche Stromübertragung und -verteilung vor große Herausforderungen. Notwendige Investitionen in die Netzinfrastruktur führen zu einer Steigerung der Netznutzungsentgelte, die von den...

In some markets vertically integrated firms sell directly to final customers but also to independent downstream firms with whom they then compete on the downstream market. It is often argued that resellers intensify competition and benefit consumers, in particular when wholesale prices are...

In our model, an agent produces an outcome by a costly effort and then distributes it among heterogeneous users. The agent's payoff is the weighted sum of the users? shares and the coefficient reflecting their heterogeneity. When the agent neglects users? heterogeneity the game leads to an...

The purpose of this article is to analyze how competitive forces may influence the way media firms like TV channels raise revenue. A media firm can either be financed by advertising revenue, by direct payment from the viewers (or the readers, if we consider newspapers), or by both. We show that...

Online Consumer-to-Consumer Communication Networks are characterized by informational and social benefits as well as time and effort costs for participants. Therefore, this dissertation takes an economic perspective on the network formation process as a determinant of value for consumers and...