I used to be a 'store detective' and picked up shoplifters. Had a five story building, many times to myself. I was in great shape! Made about hundred apprehensions or so.
Anyway, If you see it, report to a manager not a clerk. Usually they don't care and look the other way. Do not apprehend them yourself or stop them. Could prove hazardous to your health.
You are right, shoplifters make us pay more. Makes me so mad. The manager of the NICE dresses at that store was shoplifting and I could never catch her. She was the trickiest devil. Eventually she got really greedy and tehy fired her, but never caught her and prosecuted her. I know she was reselling the dresses to friends and pocketing the money.
Most people I apprehended had the money in their wallets or purses. I caught more women than men. We prosecuted everyone we caught. We then told them they were not allowed back in the store. My, that was a longgggg time ago. Guess things have not changed much.