THAT is exactly why this whole thing is best solved by law, rather than consumer action, because that is a coordination problem. To be compliant with the law, you would have to not use software that you can't redistribute to make games that will be available to citizens of the EU (or, at the very least, that consumers can't reasonably get their own license to). Which in turn means that third party library developers would have to figure out a licensing model that works under the new legal framework.