WoW entered into a market where the subscription model was already a staple; where every game it had to compete against had a similar model and strategy. Sure, it came to dominate that field. But the demographic was already used to that way of doing, and it's not like they could turn to another game for a similar experience without a subscription.

Call of Duty is one of many FPS games in military settings. Even if I were a diehard fan of the franchise, I'd have a real decision to make in the choice between continuing on with my series and paying money each month to play versus choosing another, very similar game, with no recurring costs...

Shit, I could still play Counter-Strike for free, or go back and play any of the earlier Call of Duty games, and get a similar experience at a fraction of the cost.

A WoW addict, doesn't really have that option.

Of course, I can only speak for myself, and extrapolate on people with similar sensibilities... but that's why I wouldn't buy into this.