Simple answer to the OP -- because the third parties don't want to put them on there.
Remember, these companies look to make money off their properties. For example, Sega sells Genesis the games individually on the Wii but releases bundled collections for the PS3 and X360.
Mike from Morgantown
I am Mario. I like to jump around, and would lead a fairly serene and aimless existence if it weren't for my friends always getting into trouble. I love to help out, even when it puts me at risk. I seem to make friends with people who just can't stay out of trouble. Wii Friend Code: 1624 6601 1126 1492 NNID: Mike_INTV |