Especially Square-Enix, who pretty much gave Nintendo the finger after the SNES.
Unfortunately, as much as I agree with the sentiment, it's not a good idea to piss off the biggest 3rd party publisher in Japan when your platform is suffering from a definite lack of quality 3rd party software. Besides, as aggravating as Square-Enix's treatment of their properties can be, I do want to see AAA titles from them on the Wii, and if their stuff can sell maybe other 3rd parties won't be so hesitant about signing on.
And let's be honest here: Nintendo deserved every bit of what they got from Square in the N64 days. Remember when Yamauchi said that RPG gamers were sad little people living in their parent's basement, and that they really didn't care about RPGs? Yeah, that was bright.