Die Liberalisierung und Regulierung der Telekommunikationsmärkte in Deutschland ist trotz einiger Widrigkeiten als großer Erfolg zu bezeichnen. Verbrauchern stehen, im Gegensatz zu den Zeiten des staatlichen Monopols, preisgünstige und innovative Produkte zur Verfügung. Im Zentrum der...

A wide range of media provide information on many products based on reviews or expert opinions. A natural question is, whether these reviews and expert opinions have any effect on sales. A small but growing literature in economics and marketing science deals with this issue, by testing the...

Retailer bargaining power is an important aspect of many international antitrust investigations. Size and market share analysis are often the cornerstones of bargaining power identi cation. However, other factors, like consumer behavior, i.e. "one-stop shopping", can heavily a ect the bargaining...

A wide range of media provide information on many products based on reviews or expert opinions. The effects of such information on product sales is analyzed in a small but growing literature in economics and marketing science. However, there is much more coverage on companies and products in the...

This paper provides evidence that ownership and organization matters for the efficiency of provision of public services. In particular, we find that pure private ownership is more efficient than pure public ownership, and public ownership is more efficient than mixed ownership. The delegation of...

Increasing horizontal as well as vertical transparency in oligopolistic markets can be advantageous for consumers, due to reduced search costs. However, market transparency can also affect incentives to deviate from collusive agreements and the punishment by rival firms in the market. Using a...

Media platforms typically operate in a two-sided market, where advertising space serves as a major source of revenues. However, advertising volumes are highly volatile over time and characterized by cyclical behavior. Firms' marketing expenditures in general are far from stable. Due to planning...

This paper provides evidence that ownership and organization matters for the efficiency of provision of public services. In particular, we find that pure private ownership is more efficient than pure public ownership, followed by mixed ownership. The delegation of management in different legal...