To answer your questions, they probably waited for something else than "Mario" and "Kirby" and all the rest of the popular Nintendo IPs. Personally, I can't wait to see some Sony IPs use the motion control technology too (Killzone 3 mostly). I own a Wii as well by the way.
Honest answer from a gamer.
Random game thought :
Why is Bionic Commando Rearmed 2 getting so much hate? We finally get a real game and they're not even satisfied... I'm starting to hate the gaming community so f****** much...







