I'm sure it has happened but at least with banks they have the option of following the chain of the money to wherever/whomever it ends. And with ever more strin

I'm sure it has happened but at least with banks they have the option of following the chain of the money to wherever/whomever it ends. And with ever more stringent ID requirements to open an account that person should be identifiable. Generally banks will freeze funds if there's a claim of fraud from another bank. Far from perfect (fake ID, assumes the issue is spotted promptly, etc.) but better in this case.