>>106510845 (OP)
No because the project is too complex to do it effectively. You need to track bug reports, you need different people willing to work on different subsystems, you need a way to get updates out, and you need a way to coordinate all of this without worrying about DMCA takedowns. No one with the skills for it is going to deal with this. The more hidden it is, the less likely you are going to get the developer numbers you need to do anything worthwhile.
The best you are gonna get is patching old vidya where the source leaked.
In that case you usually have a set list of things you need to do (fix modern platform bugs, linux port if you can be bothered), and you can do it yourself or with friends. Once you are done with what you need to do you can drop the new build somewhere and eventually it will end up on pcgamingwiki where people can get it. This has already happened a few times, usually under the name of "unofficial patch" or "updated game client", because it is much easier to pull off as an anon.
>>106511192
Wine has issues for the same reason. fixme fixme fixme. Try re-arrange the tabs on HxD, they broke that like 8 years ago.