It's literally what every mass retailer does. CVS, Walmart, etc will use their power to decide your shelfspace/merchandising, combined with private label products and a pipeline of new branded products in your category (e.g. ever wonder why so many new jerky brands pop up and disappear overnight?), to put downward price pressure on you until your margins are razor-thin. This isn't that different. Anyone who has worked in/adjacent to retail understands how cutthroat the industry can be.
Retailers also force suppliers to buy advertising in their owned media channels (e.g. in-store and online) as another way to squeeze them. Amazon is doing/will do the same.
Retailers also force suppliers to buy advertising in their owned media channels (e.g. in-store and online) as another way to squeeze them. Amazon is doing/will do the same.