It's really up to third parties to put their A teams on projects for the Wii and DS. If they're banking on the 360, PS3, and PSP than they're seriously limiting their potential to grow as companies. Like it or not, Nintendo is probably going to own the industry practically for the next few years, expecially as far as Japan and most of Europe. Theoretically if third parties joined hands and did give up Nintendo would only make more money as their games would sell to people without third party options. People aren't buying Nintendo systems for third party games, but if there are good ones there they'll buy them once they have it.