Earlier quoted context omitted.
In general, open-source all abandonware. Here's a few examples of non-game old software that would benefit the society if open-sourced: Windows 9x and classic Mac OS. No one has sold these OSes for 20+ years and they turned out to be evolutionary dead ends. It would make sense to release their sources so people could learn from them and run them on new hardware more easily. Flash Player. Adobe has stated in no uncert…
Is there a risk those closed source projects would be sued following the release because they disclosed some forgotten sin? I'm thinking mostly of anti competitive practices from Windows.
At any time, one of them could say no and the process stops. So you’re basically paying for everyone’s time and possibly to relicense some parts. And im sure I’m missing other parts.