Fusion is actually far cheaper for the consumer to get access to all Nintendo games than the model Nintendo proposes today.
Today if you want to play say Pokemon X/Y and Mario Kart 8 ... you have to pay Nintendo $170-$200 for a 3DS, then another $300 for a Wii U ($470-$500 total just on hardware).
With the Fusion setup if you want to play Mario Kart 9, you can just buy the handheld variant for $200 or lets say you like the Pokemon games but have no interest in a game handheld ... you can play the next-gen Pokemon at home on your TV in 1080P and not have to buy a handheld.
It's actually far more consumer friendly that the setup Nintendo has right now, where they are honestly asking for a ton of money to access their entire game lineup.