For many customers that eliminates the only advantage of shopping at a brick & mortar store. If you have to ask store staff for everything then it's easier to shop online.

Cities are destroying their own business districts and losing sales tax revenue by refusing to enforce shoplifting laws.

Then you need more staff.

I was trying to buy some allergy spray at CVS, and couldn't get anyone to unlock the case. So I left and ordered it online from Costco, at 1/3 the price.

Stores can become large vending machines with minimal staff

Sadly a lot of the more risky chains do this pretty regularly. I was in a best buy a few years ago where almost everything was behind glass. I wonder what that does to the minds of locals shopping and feeling like they're always under lock and key. It can't be healthy.

Also requires more staff to get the goods to the customer. It used to be normal for everything in a store to be behind the counter, and you got served. But self service is cheaper for the store, unless/until we reach a tipping point regarding thefts.

And what if the manager sees me put it in my pocket and walk out. Police still arent coming.