Sorry, I'm just being realistic. "Whenever there's a will there's a way" and so on. People have tried to legislate all sorts of various things, even stuff like "PI = 3" without much success because they weren't viable.
Don't be ridiculous. The fact that it's dumb to legislate mathematical falsehoods doesn't mean we can't successfully legislate things.
I said it's not possible to legislate some things away, i.e. unviable legislation. A hard ban on modding / AI reimplementation isn't viable, because you can't really keep data off the internet, evidenced by things like leaks, Anna's Archive etc. remaining online. People can always reupload the remade GTA or whatever onto noname fileshares, code forges, torrent and so on.