We analyze a Hotelling model where consumers either buy one out of two goods (single-purchase) or both (multi-purchase). The firms pricing strategies turn out to be fundamentally different if some consumers multi-purchase ...

Standard media economics models imply that increased platform com- petition decreases ad levels and that mergers reduce per-viewer ad prices. The empirical evidence, however, is mixed. We attribute the theoretical predictions ...

In a Hotelling duopoly model, we introduce quality that is more appreciated by closer consumers. Then higher common quality raises equilibrium prices, in contrast to the standard neutrality result. Furthermore, we allow ...