It's interesting reading the comments about the store and pricing..

I think this is a big issue, you can't really judge a game if you don't know what they're asking for it.
You also don't really feel like you own the games when they're "free".
And you can't have special sales, which usually helps indie games a lot and entices buying, when everything is "free".
You also can't have bundles, like the humble bundle, which could also help sales and interest for the OUYA.

I say drop this free thing all together, it doesn't work and it won't help the console in the long run.
Sure, force every game to have a demo, that's fine, but please write a price on the store front, f2p games can be labeled as 'f2p' and free games as 'free'.
Because this whole thing is just bad for everyone involved.

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A positive sidenote though, it's great that it allows "Pay what you want" but that can still happen.