360 vs. PS3 vs. Wii - The Designer's Perspective
The problem with this is that users have to buy the x-box or ps3 "wiimote" separately instead of it coming with the system. I forget exactly what the percentage is of users who buy additional peripherals (such as additional drives, special controllers, etc) after buying the core system, but I think it's quite low. Obviously, developers want to make games that the greatest number of people will buy, not just the few people who bought a particular peripheral. Basically what I'm saying is that if MS or Sony do come out with a "wiimote" chances are only a small percentage of console owners will purchase it, which means you probably won't see many games taking advantage of it.