Not getting it, and I hope it fails.
Ouya is largely based on the "free-to-play" or freemium model. I hate freemium. Freemium needs to die and so does Ouya.
And I know it will fail, but due to a different reason: lack of support from major publishers and developers. Or rather, no support or whatsoever. The whole idea behind Ouya is to encourage open source, hacking - and (intended or not) easy piracy. Publishers and developers are not going to support a platform that encourages piracy. (I know the big three, EA, Activision and Ubisoft, have already decided they won't support Ouya. That is a death sentence right there.)
So the only viable business model for apps on Ouya is freemium, whose revenues are mostly immune to piracy. And I am not supporting the freemium model. I hate it and I want that business model to die.