Are consoles sold as general computing devices?
https://www.filfre.net/2016/04/generation-nintendo/
This was back in March 1991, mind you. The US courts decided that for some categories of things which compute, the manufacturer gets to control 100% of what runs on them. That makes them quite specific in my eyes.
I don't know the exact legal term, but that's what a walled garden amounts to. Yeah, you take a general computing architecture, and you lock it down by law. It doesn't need to be non-Turing complete or what have you to be "specific".
https://www.ftc.gov/tips-advice/competition-guidance/guide-a...