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.
RPCS3 is indeed excellent, but if you look at their compatibility list about a third of all games aren’t in a playable state. The big exclusive titles people usually set up an emulator for will work for the most part, but outside of that it quickly becomes a lot sketchier.