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.
The good thing is, on Android you can get an APK without root or anything like that, same for installing it, and you can use an emulator (or something like waydroid) to run it on a computer. For cases where the game doesn’t use any more specialized servers, and just uses the app store for authentication, DRM, etc. the situation is no different from PC games with DRM - it’s bypassable, and if done right, will work for all games, not just one.
That said though, it’s very true for multiplayer/always online games, and those are very common on mobile. While it’s possible to reverse engineer and rewrite the servers, for most of them nobody is going to bother. And in the world of aggressively monetized games, developers have an incentive to keep it that way - they can’t make money from players who are still enjoying a game they’ve already squeezed every penny out of.