Interesting project! It's just a matter of time before we'll have a universal executable/binary translator that can run any program from any OS. These are artificial constructs when you think about it.
If you haven’t seen it, @jart’s Actually Portable Executable does just this - it’s definitely got a long ways to go (iirc it only supports CLI apps), but it’s fascinating to see a method of building binaries that can execute across various architectures and operating systems.