I am not sure if Sony should attempt that, they don't really have a studio for it. The PlayStation studios make games like Ghost of Tsushima, Spider-Man, Horizon Zero Dawn and God of War. All these games have RPG elements, (some more than others). I think those games define PS, so why would they offer them to try to make something that's similar as Bethesda. Also knowing such a game would be at least 5 years away if they have to start developing it.
Please excuse my (probally) poor grammar








