At one time, all the goods in a store were behind counters. Customers had to ask to inspect the merchandise. Then came the concept of putting merchandise out on tables, so customers could freely examine the merchandise. Of course, doing that greatly increases the chances of theft. We haven't figured out the next evolution of stores.
I think they'll be like Amazon. The store will have demos, and if you want one, click on your phone, and exit the store. The cost will be added to your account, and the goods will be either shipped or outside, waiting to be picked up. I think everybody is coming to conclusion having customers check themselves out is a bad idea. And if merchandise is on a table, with only 30 feet between it and the door, it's going to walk out. Humans should have morals, but "free" is better.