[h2zizzle]

No, they definitely sell you what they want you to buy, not necessarily what you want to buy. Demand is an input, but not a determinant, of what gets stocked. The calculus ultimately determining what gets stocked happens far away from the storefront, and way above the heads of your given GM, involving relationships with suppliers and the image the store brand wants to project, at scale. In fact, in most stores, GMs are barred from making deals with suppliers to determine stock. You HAVE to go to corporate if, say, you want your local CVS to sell your locally-produced product. A GM who puts something that isn't in the planogram on a shelf is getting sacked.