It will be hardly any work once a law passes, because they’ll make sure it is. Everyone knows where the proprietary code is. It doesn’t just get merged in “by accident” unless you are a really shit developer (and to be fair some are).

Besides, no one is saying they have to open source it. To be honest, the outcome from this petition that I would most like to see is simply a blanket indemnity to the community attempting to revive, continue and improve the software from that point forward. If the law says that it’s legal once a software is shut down, for the community to figure out a way to make it work again and make it their own, and puts no further responsibilities on the “rights holder” at all, I think that honestly solves the problem in 99% of cases. It would be nice if they gave the community a hand, released what they could, and tried not to be shit about it, (and I know some of them will be shit about it, but we’re pretty resourceful), as long as they’re not trying to sue every attempt into oblivion I think we’ll make a lot of progress on game preservation and make the gaming world a much better place.