Yes money is their priority but all they have to do is sell the software. Gaming wouldn't just stagnate and die, these days thanks to it being ingrained in pop culture.
Yes their was a videogame crash in the 80's but that wouldn't happen again.
As long as you have the right software coming through, like games like Gears of War. Why is it movie directors like peter jackson want to work onthe 360 but not on the wii then ?