True. Nintendo, of course, has a lot more IP than just Pokemon that they could license for all kinds of stuff. And the people who grew up with their games are now earning money, so they can actually buy the licensed material. Good point.
They could be like Marvel. Tons of characters and story lines to license for film and games.
Marvel licensed their IP out to Marvel Puzzle Quest (which was somewhat of a Bejeweled clone) and was quite successful with it. They didn't have a huge studio behind it either.