Most banks today separate the employees from customers by ballistic glass. Convenience stores usually don't have that protection. Sometimes, when employees intervene & resist an armed robbery, they are trying to protect lives, not property. Employees don't have any way of predicting what an armed robber will do - he may leave or he may hurt or kill employees.I am not disagreeing with you, my point is that it’s human nature, or instinct, (probably more for men than women), to retaliate when someone grabs something out of your hand without first asking.
Bank managers tell their tellers all the time that if they are held up to just hand over the money. It’s insured. There have been many instances where convenience and liquor stores have been robbed and employees will intervene and attempt to be a hero by overtaking the culprit. That’s very risky and mostly ends up bad. But, it’s instinct to protect and to keep what we believe to be our’s.
There was a holdup of a convenience store in Upper Marion Township, which is just outside of Philadelphia a few years back and the female clerk was ordered to open the register and hand over the money. With her right hand, it appeared that she was doing as instructed. With her left hand, she was reaching under the counter for the .38 that the owner kept for ‘his’ protection. The employees were instructed not to defy the robber’s orders. As she pulled the gun up from under the counter, the robber fired one shot striking her in the right shoulder and then he fled out the door. Lady Luck was shining down on her that day.
I recall a 7-11 clerk that was robbed. After the clerk handed over the money, the robber marched him toward the cooler. The clerk realized he was about to be murdered, so he decided to violate store policy to save his life. He drew a pocket pistol he carried (against store policy) & killed the robber. 7-11 fired him & he was offered many jobs at other stores.