What’s the point of an ATM if not to dispense cash? More seriously, given that 99% of ATM transactions are cash withdrawals, why wait until the customer has inserted their card, entered their PIN, selected their transaction type, and entered an amount before mentioning that there’s no money to be had? A clever ATM design would flash “NO CASH TODAY” in big red letters before you even insert your card.
Maybe everyone will want to buy aquarium tickets instead?