Why isn't samus in a mario kart game?

[tabsina]

I've noticed a lot of people here keep defending the 'Samus in Super Mario RPG' due to it being made by Square.. but do you know what Samus was? a cameo.. thats all..

nintendo tends to put cameo characters (not so much anymore) in their other franchises for the hell of it (this was square, yes, but nintendo did it too) .. but it does not mean you should expect that cameo to reappear in that franchise as a main character, in fact, if they did, they wouldn't really be a cameo in that franchise anymore and.. well.. you should get what i mean