Earlier quoted context omitted.
The difference is between retailer and marketplace. Both Amazon and Costco are retailers, and both could use that knowledge to decide what products to self-source for better retail margins. Either way, still a retailer, but maybe also a manufacturer / wholesaler. But Amazon is also a marketplace. In that role it acts as a "rentable retail space". Using the data of the retailers in your marketplace to decide what to m…
I'm still not understanding the distinction here. Costco and Amazon both sell company-brand products, alongside non-company products. Costco and Amazon collect and analyze sales data from the sale of both company and non-company products.
Costco can determine that Best Brand shoes sell in its stores and decide to source shoes themselves and stop carrying Best Brand.
Amazon can determine that the Footlocker in their mall is making a killing selling Best Brand shoes and either sell Best Brand shoes in their anchor store or source their own shoes, all at a price that Footlocker can’t match. They can also advertise those shoes throughout their mall and change the layout so customers have to walk past their cheaper shoes to get to the Footlocker.