It might work like that in a mom-and-pop corner store, but for most retailers it is much more complicated than that. Larger stories like Target don't just buy a truckload of Playstations and then put them on the shelf. Instead, one of the ways it happens is that Target works out a specific deal with Sony where Sony essentially 'rents' the shelf space, and Sony then gets to design where on the shelf their products go and is responsible for filling the shelves.

Other agreements might be to for Target to purchase a certain amount of Playstations but only as long as Target places them on the top shelf. These are just two of the many different ways that the shelves get filled. In these examples, it's much much harder to draw a comparison to Amazon without knowing how Amazon makes similar agreements with its sellers.

(Target and Sony are just examples, I don't know if Target actually does contract specifically with Sony in this way)