In this paper we study concentration in the European Internet upstream access market. Measurement of market concentration depends on correctly defining the market, but this is not always possible as Antitrust authorities often lack reliable pricing and traffic data. We present an alternative...

Internet Service Providers compete for customers while exchanging traffic flows to provide a complete, end to end, service to final users. This requires reliable interconnections among competitors that form multiple Global Supply Chain Networks (GSCNs) for the delivery and exchange of Internet...