To be fair, those don't really count as they are built to serve American customers. The cashier, for example, would never put what you bought into your cart. (Heck, I wouldn't even allow it, just look at how messy it is.) That's why there is space behind the checkout.

https://i.ytimg.com/vi/hkXxvHAFttQ/maxresdefault.jpg

And looking at your picture, the space becomes more narrow at the checkout. I have no idea why they would need that much space - there is a lot of room between her and the barcode scanner.