In other words an outsider, not bound by old business contracts like the original authors, can pretty much fix/patch anything under "fair use" considering the age of the Amiga software (and hardware). This could be a way forward, right?
No, it rather means that an outsider can make a "hack and slash" attack to the software and make the software infrastructure completely unmaintainable becaues nobody knowns for any future applications which version the software had, where the actual bug was, how to fix the bug in first place, and on which version the software depends.
Again, and sorry to sound arrogant again, but this is the difference between software engineering and hacking. Software engineering means to keep the software maintainable, to have a version managenent, a software repository, a revision history and a process how to update software. You may not believe it, but yes, there is a repository for P96.