That's a pretty dumb double standard posed here. Third parties can't/don't copy Nintendo's first party efforts by making amazing 3D platformers (honestly, 3D action adventure titles basically) because they can't have Mario, Samus or Link, so that just leaves fitness games for them, but it's fine to copy Microsoft and make FPS games that aren't Halo with Master Chief? No, third parties aren't trying at all on Wii, even though there's plenty to take from Nintendo, not that every 3rd party on the other systems copied MS/Sony, but anyway. There's plenty more than just Wii Fit to Nintendo's succesful output. Heck, De Blob did good showing that approach could pay off but even THQ dropped the ball afterwards. Where's De Blob 2? Other success stories didn't get follow ups of the same philosophy, if not IP, either. Where's a high budget 2D platformer after NSMB Wii's (lazy :lol !) showing? The system does have many platformers, but it's all low profile stuff from small developers (bless them!). None of the industry's giants can develop something in that vein with a decent budget and marketing push? People claim they're actually trying? :lol
Oh, and Just Dance isn't copying anything Nintendo made either. Wtf? Sorry but nobody tries to copy Wii Music. It's trying to be the new hot music game like the Guitar Hero type games which performed extremelly well on all systems, not just the Wii, so don't spin it like that just to reinforce such views. Besides, out of the fuckton of such games Ubisoft puts out, only a handfull sell, and mostly those with some more effort than usual. That only reinforces that all it takes is effort, not the opposite. The Lego games also sell good everywhere and if I'm not mistaken some of the recent ones show less effort in the Wii versions, possibly by different teams.
As for people saying it's too late, eh, that doesn't stop Sony and Microsoft from trying now, does it? Clearly 2 of the major players think there's time left in this gen.