I've thought of this, but don't have the wherewithal to actually make a project come to fruition.
I'm also not a lawyer, but I've read multiple articles on this, and it doesn't seem like any legal violation. Corporation got lazy, didn't confirm where 10m in royalties went and under what circumstance, and got burned.
Finally a corp gets scammed by the common man.
I say good on him.
I paid full price, and am happy with that decision.
With the recent expanded modding support, I'd pay double assuming the mod scene can keep up with the original.