This usually only applies to certain categories and depends on the pricing model of the supermarket (and the supplier/purchaser power dynamics that depend mostl

This usually only applies to certain categories and depends on the pricing model of the supermarket (and the supplier/purchaser power dynamics that depend mostly on the size of the retailer). Soda, chips, crackers and cookies are the most prominent categories that have any significant amount of placement power, and that's mostly because the big players use a direct store delivery model that helps alleviate labor costs at the store level.