Well there's only one reason why there's not 50 different flavors of C0.x floating around, that being PROF-UIS.
Now the thing is, even if they could export a non official version they still couldn't sell it, since its GPL.
But the worse part is if some idiot were to try that, it would fall upon the guys that wrote the code for free, to hire a layer, etc to try to stop it, with very little chance of reimbursement I might add.
On the other side of that, if you were to make a closed source the chances of piracy go up exponentially.....
Same thing goes for trying to recoup profits for that as well.
The only bright side of that is that those thieves probably couldn't make a go of selling games anyway. Indie pirates.... argh?
I'd suggest you guys take a look at working business models out there, and see what they did.
GM, and Stencyl are going the Apple route, and with the potential of HTML5.... that could work pretty good.
It would, however require a bit of an investment.