Well, yeah, but glass would be just as effective and much cheaper. So they're doing something in addition to that.
If the requirement was "display the goods we have for sale" then glass beats this thing in virtually every way. Cheaper, minimal maintenance, no firmware updates, and most of all: familiar.
But these are going to be:
* Tracking consumer interest ("eNgAgEmEnT")
* Swapping between content display and billboard-style advertising
* Changing prices dynamically depending on weather, foot traffic, historical "engagement", national ad campaigns ("all Coke products 50% during the World Cup!"), etc.
* Pretending there's still Red Bulls in there when there aren't.
* Pretending those Red Bulls are on the 3rd shelf, right, when the stocker actually put them on the 4th shelf this time. (He forgot to read the updated Planogram email)
It's dystopian crap, I want nothing to do with it.