This. I always find myself a bit frustrated when shopping that I can't just open an app and see a map of the location of the item I want. A robot for this seems like overkill. I suppose it is probably just as much for marketing.
I think there are different segments of the market here. Personally, I'd quite like to be led to the drill bits by a robot. Having a little map pop up on my phone via AR would be 99% as good, though, sure.
Lowes does have an app with in-store maps. When you search you can see product inventory and where items are located in the store. I've used it a few times with moderate success. It only has 25 reviews on App Store with 2/5 rating, so that might be lowering adoption. For comparison the Home Depot app has 186 reviews with 4/5 stars.
Sadly, the employees apparently shuffle things around for local reasons and the app doesn't get updated. The employees will then badmouth the app to customers (well, one customer, at least...). "Oh, the app? Yeah, that's wrong a lot... We actually put that item over there at the end of that other aisle, because we wanted to put other-item here instead."