That starts to be somewhat comparable, but still doesn't feel much like Amazon.
Amazon isn't separate blocks of space, and merchants don't really rent their own areas. On a website that'd look like amazon.com/mycrapcompanystore/ or something.
As a customer I just go to amazon and search for what I want. They choose what specific items I should see, in what order, and I am barely aware of who actually sent the item to Amazon. You have to look pretty closely to even tell. In many cases it's just not even possible to choose, with the way Amazon combines their stock.