And on top of that. If you add gamepad support (which will be trivial for most games, and those which are not won't even bother). And take additional 5 minutes to upload to the OUYA store. Now you're also supporting the OUYA devices, in addition to all other Android devices.
The OUYA is not just its own single thing. It's just a tiny part of a huge ecosystem. And this tiny part is helping shape the direction that the rest of the ecosystem is going. (meaning you'll see more gamepad-friendly games in the future) You can be sure that the OUYA won't be the only Android console-like device we'll be developing for. Many more will come to compete with it in the coming years.
One really big sign of how innovative this is. Is that even many of the HN cannot grasp what they're doing. Watching the critics argue with each other here, reminds me of watching the MPAA discuss anti-piracy measures. No offense intended :)