Nintendo does what makes the most money for them... Nintendo would only do that if it made business sense to them(Like getting RE on the GC)
Nintendo knew they needed older gamers so they paid capcom to bring a huge title(s) to the GC. They will do it for the Wii, just wait... (crosses fingers nintendo is writing a check to Capcom for RE5)
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut