players, but also because key service dimensions are hard to quantify. Using empirical entry models, we show how to infer …

players, but also because key service dimensions are hard to quantify. Using empirical entry models, we show how to infer … Bresnahan and Reiss (1991), which in practice proves to be difficult. Third, unlike previous empirical entry models, such as … entry models, we show how to infer information on these sectors’ degree of intra- and inter-channel competition from the …