Wiifit and Mario Kart are 100% legit. No one who buys MK is buying it for the wheel. They can buy the wheel seperate. Same with Wii Play... You can look at it as a 10 dollar game if u like.
WiiSports? There are tons of people who buy a Wii JUST for WiiSports. Also the wii is cheaper in Japan where it does not come with WiiSPorts, so in NA/Others people are paying for it.
The games bundled with the 360 and PS3 do not increase the price, so no one is really paying for them. they just increase the percieved value.
End of 2009 Predictions (Set, January 1st 2009)
Wii- 72 million 3rd Year Peak, better slate of releases
360- 37 million Should trend down slightly after 3rd year peak
PS3- 29 million Sales should pick up next year, 3rd year peak and price cut
