If they tried to make money off it they would likely have been in court..
Look around the industry and you will see loads of projects that have been squashed.
Square did it to protect their potential cash cow and nothing more.. And you can bet if anything comes along in the future it will magically look a lot like that project.
These things get banned for the same reason you see companies attacking emulators, and rom usage, even for long dead systems. Money. Plain old money