Ian, they're trying to combat the perception that third parties cannot sell on Nintendo systems simply because they don't have Mario. Third parties don't like hearing that their failure was their own fault. They make crappy knock-offs that noone wants, those fail to sell and, well, game over.
The Wii is a Gamecube 1.5 because it had to be, had they tried to take the giants MS and Sony head on they'd have gotten slaughtered. The Wii's graphics are GC1.5 yet the PS3's sales are GC1.5. Guess who's happy with that. Nintendo cannot afford to outspend MS and Sony on things like graphics or third-party exclusives yet they're winning. Third party support IS increasing though it is slowly. But really, what can Nintendo do when third parties are too inept at making games that sell? Take creative control from third parties, basically creating an outsourced Nintendo game? That doesn't make them release their own games, that just makes them go for more lucrative contracts. Try to buy them off? 1. The games still won't sell and 2. MS and Sony have more money and are more willing to throw it at developers.