[scarface74]

How is a shopping site a “natural monopoly” when there is an existence proof that there are other large shopping sites - like Walmart.com?

If you go on Facebook or Instagram you can find thousands of small merchants who advertise there and ship directly to consumers.

> There's nothing stopping Amazon from building a physical store next door to a Walmart and selling its products there.

And there is nothing stopping you from building a website and doing targeted advertising that is reachable by anyone. Wouldn’t you say it’s a lot easier creating a website than building a physical store?