Isn't the gaming market big enough for everyone to make money?
We go watch movies such as Spiderman, James Bond, or whatever, and most of us don't ever seen to care if its made by a certain movie studio or not. We just watch movies, enjoy them, and then continue on our merry way.
Sure, the movie studios are competing against each other, but I doubt that there is a "movieticketchartz.org" where Sony fanboys will rip on both Disney fanboys and Universal fanboys or whatever.
Can't we all be satisfied if all the Sony people buy PS-Triples, all the MS people buy Xbox360s and all the Nintendo People buy Wii's? What if its split 33% all three ways and everyone is happy?