I'm not a Sony fanboy.. I would like to see Nintendo crush both Sony and Microsoft. It won't happen though, because Nintendo has already said they are interested in making affordable products to appeal to a mass audience. Boring to people like me, but economically intelligent.
Although it would be hilarious to see a headline like "Zelda: Twilight Princess single handedly bankrupts Microsoft; Sony"
The thing with Nintendo is that they made a few lovable characters "back in the day" and now they are just replaying those same characters over and over. They don't have much more than that, other than childish games. Nintendo seems to only appeal to ages 3-8, then around 18-30. I'll be the first to admit that I'm going to buy the next generation Nintendo console just to play Zelda, Mario, Castlevania(possibly), Kirby, and Metroid, in that order.