***...one of the big problems we have noticed with US supermarkets is TOO MUCH choice.***
Years ago I saw a news report that producers of groceries often have to BUY shelf space from the grocer. Kind of a “kick back” to display their goods.
These are slotting fees. The funds are supposedly used to cover what it takes to set the shelves, sign, etc. Depending on the company and retailer they can be quite substantial. You don’t pay, you don’t get your product on the shelf.