Gonna be bit of a divide here, but in my childhood, my favourite kind of games were on Nintendo 64/Gamecube. It seems after the wii, they have just switched markets to the more family kind of audience.
Basically, what i am trying to say is, i think Nintendo would reach out to a much larger audience if they just sold on Xbox/Playstation. No one wants to fork out to buy the Wii 'Flop' U just to play Mario Kart 8