They have the biggest AppStore out there and yet they waited many years to let people playing with it on tv in a indecent way!
I'm not saying that a powerful AppleTV an improved AppStore market can replace PS/XBONE but has a great potential to compete with WII as iPhone did with Gamboy.
Talking about Nintendo. I don't yet understand why they bought Beats.
I would bought Nintendo or steal a contract from them to license their titles (Mario, Zelda etc... will run perfectly on a iOS TV device)!