We examine how heterogeneity in customers' multi-homing tendencies affects a platform's response to new entrants in its market. We develop a formal model to generate empirical predictions and then test them leveraging a historical setting: TV broadcast station entry into local newspaper markets...

We compare a discriminatory pricing regime with a non-discriminatory regime in a competitive bottleneck model where content providers endogenously sort into single or multi-homers. We find that consumer prices rise when the share of single-homers increases in the non-discriminatory case, while...