I agree. I think the Ouya is very exciting, and if it comes to my country I'll be sure to pick it up. We have a few game devs locally who are already tinkering with it, just because it is now the easiest way to get a game into someone's living room. That's a powerful place to be.
It'll get there, I have no doubts about it. It'll never rival the PS or Xbox, but it's not meant to. I don't think it's really meant to rival anything. It's so cheap that anyone who considers themselves a core gamer could afford to pick one up just for curiosity's sake, and anyone who considers themselves a casual gamer might grab one just because it's so cheap.