Of course they have enough games! They could just release multiple games in the same series on the console. The Wii got 2 Mario Galaxy games so it has happened before. They could very well have a sequel to any number of games appear on the Wii U. Mario Galaxy 3? 3D World 2? Captain Toad 2? Pokemon Stadium 3? Pokepark 3? A new Donkey Kong? plenty of other series they could add to as well.
They could do some new ips as well, nothing stopping them from doing that.
Bet Shiken that COD would outsell Battlefield in 2018. http://gamrconnect.vgchartz.com/post.php?id=8749702