I personally know people running small studios moving to consoles due to piracy, and am pretty sure the big ones are doing it because of that too.
Ah, right, so it has nothing to do with the fact that console games get much more marketing, are easier to develop for, console gamers are easier to appease, consoles have more mainstream appeal, etc.
Infinity ward recently commented on it, so did id.
It's much easier to blame piracy instead of admitting that you whored yourself out to Microsoft and Sony so you could make more money.