We need to pay more for niche titles

Some costs of an online game scale with the number of players: If you have ten times the number of peak concurrent players, you need ten times the server and bandwidth capacity. Other costs don't scale that fast, you don't need ten times the number of developers. And some costs are fixed and don't scale at all. Overall that results in economies of scale, that is the more players you have, the less it costs you per player to run the game. And as a consequence a game with more players can survive

World of Warkraft...