By the time we have AI on the desktop, my AI will be monitoring my accounts 24/7, and would have contacted the bank and the police before the game even starts.
We don't keep people from creating websites just because they could create a phishing site. AI can be used for bad things, just like computers can generally, but I'd rather keep them both unrestricted. If someone's doing something bad with a computer, or an AI, go after the person committing the crime. AI will even help you catch them.