Do new digital consumption channels of music depress sales in old physical ones, or are they complementary? To answer this question, we exploit product-level variation in sales and prices of over 4 million products, observed weekly between 2014 and 2017 for the entire French market. A unique...

We elaborate a simulation model to analyse inter- and intra-modal competition in the transport industry, based on game theory models. In this game, consumers choose a transport mode and an operator to travel on a given city-pair; operators strategically decide on prices for the services they...

We assess the empirical relevance of the new theory of regulation, using a principal-agent framework to study the regulatory schemes used in the French urban transport industry. Taking the current regulatory schemes as given, the model of supply and demand provides estimates for the firms'...