The point that you seem to be missing Mr. Serious_frusting is that the Wii comes with a wiimote, is less expensive than the ps3 and caters more to the casual.
Most games catering to any motion control crowd will be heading directly to the wii. Why make a game for an audience when the audience is not guaranteed to be there.
Sony and microsoft could bundle these controllers with their consoles but this is besides the point. The problem is that nintendo has the brand recognition and already has key titles such as wii sports, carnival games and the almighty Wii fit.
The major knockout blow is also the fact that many people who own the Xbox and Playstation do not want this control scheme. This has been reitterated (and struck home hard) by the manufacturers of these consoles.
Endure. In enduring, grow strong.
