Not to sound heartless, but with the gates in the way and no easy way to negotiate and no way to get to the money, it’s hard to turn this in to a hostage situation. Sure, they may claim to threaten a customer, but the teller can’t see that. If a bank robber was vicious enough, they could easily bypass this gate - but most aren’t the psychopaths you see in movies.
Remember when airline hijacking for money was a common thing? They added a technological safeguard – the Cooper Vane to prevent parachute exits. Now it isn’t common.
