A lot of old games have become unplayable on modern hardware and operating systems. I wrote an article about how making games open source will keep them playable far into the future.
I also discuss how making games open source could be beneficial to developers and companies.
Feedback and constructive criticism are most welcome, and in keeping with the open source spirit, I will give you credit if I make any edits based on your feedback.
I think it’d be good to release them under a timebomb license: closed source for 5 years, let the dev make money, after which they have to release their source under a permissive license.
Eh, that would disincentivize long-term updates.
Instead, 5 or 10 years of inactivity should be more than enough leeway.