We propose a framework of utility competition (UC), and we provide the intuition why price competition (PC), quantity competition (QC) and UC differ, and prove it by using a nonlinear demand system. If the network externality is positive, then PC is the most efficient with the lowest equilibrium...

In two-sided markets, instead of joining the platform simultaneously, two groups could join the platform sequentially. Under monopoly, the commitment case is equivalent to the no commitment case. With competing firms, there are two cases to consider. For case 1, if the two groups are...