They also have barcodes on just about every side of the packaging. The cashiers don't have to figure out which side is the one with the barcode, they can just slide it across the scanner in whichever orientation it's on the belt. This makes checkout super efficient.
They also have very speedy checkouts, where the bagging is done by the customer at another table. This means one employee and checkout lane can do the work of three.
Also, I've heard they pay their staff the most out of UK grocery stores.
UK: I wonder about Waitrose and how WF was like it. Waitrose is owned and run as a cooperative, which I imagine is both unique and less easy for Amazon to buy.
This is only possible because they make their own products too. If you are Coke and need to compete with Pepsi you need to use the surface of your product to help with branding.
If you are the only game in town you can have a white can covered in bar codes that says beer on the side.
