People are creatures of habit and some would stop shopping at Ralph's if it became Kroger even if nothing inside changed. At a store I worked at as a teen, we h

People are creatures of habit and some would stop shopping at Ralph's if it became Kroger even if nothing inside changed. At a store I worked at as a teen, we had two vendor supplied quarts of milk with the same UPC code but different brand labels because some of the shoppers had been drinking one brand since their childhood and refused to buy anything else. They had long ago been bought out by a competitor and it was the same milk in both brands' cartons but the customers wouldn't listen if we tried to explain that. Sometime one brand would run out and the customer would simply come back another day even though the exact same milk, from the exact same company was right there on the shelf, just with a different brand on it. As far as store inventory was concerned, they had the same SKUs and UPCs, but we had to ensure enough of each carton brand was delivered by the vendor or risk unhappy customers.