Alternatively, the Apriso exploit alone apparently would have allowed them to create fake manufacturing-level employees with fake payroll going to arbitrary bank-account targets; so an unethical attacker probably could have collected an unbounded amount of money just from that (since it likely wouldn’t have been caught until after the first event; and payroll would happen all at once, paying out to as many different accounts as the attacker wished.)

Your assuming the security professionals in question have a desire to commit a felony.