I don’t understand why software and other IP rights aren’t de facto open-source after 10 or 20 years, if nothing else for archive and legacy purpose, but also to encourage sustained innovation. I’m not even leftist; but even in the capitalist/libertarian theory, the state shouldn’t help guard private companies’ rights in software. If you publish it, the recipient has it, period. The state lending its judges to enforce exclusive rights for a few years is already a big extraction of collective resources for private interests.
Found the source of Windows XP? It’s alright, you shouldn’t be condemned for publishing it, it will only help with bugfixes and security, and as long as the owner refuses to sell it...