That would be fine in the ages before social media. Now everyone "takes to twitter" and tries to organize a social pitchfork campaign. The victimhood mentality is real. People get off on the celebrity from being wronged by a big bad corporation. It wouldn't be long before some jerk posts a video of himself leaving a roast on the cereal aisle and being '86'ed from the store, then post it straight to Youtube for all the delicious karma points. Corporate image is a big deal.
I will admit this strategy won't work for everyone. Most corporations are not willing to respond to a complaint by using social media to (accurately) call the complainer an obnoxious asshole.
Maybe this is different, but my experience with recent tech innovations in brick-and-mortar payment systems haven't been positive overall. More trouble than they're worth.
This could very well be different, but the minute the store starts valuing the AI over the customer, I think the store is in for some trouble public relations-wise.
If someone buys 45 items, but 3 dont ring up, as long as the 3 were relatively cheap items like a can of beans, as opposed to a $15 jar of spices, does it really matter ? Over time, the system will learn which items "go missing" most often and focus on them specifically for better inventory mgmt.
That'd constitute a massive retooling of consumer behavior and logic and would require quite a bit of conditioning over many years, no?