How bad will the fanboy motion control wars get?

[Pyro as Bill]

RolStoppable said:

Pyro as Bill said:

Kart Racers, 2D platformers, 3d platformers, handheld specific games ie Pokemon, Brain Training, Nintendogs, and now motion control. Has Nintendo ever lost to any competitor?

I'm trying to think of a game genre that they've lost after successfully creating. Help? 

Nintendo's playing their A-game and Rare is dead so I don't see much chance of Nintendo being successfully copied.

While not created by Nintendo, once upon a time Nintendo dominated sports games and lost them eventually.

Still, they've pretty much dominated 'Tennis' since Pong haven't they? I've not checked sales but I would have thought Super Tennis and Mario Tennis are the biggest of their type.