They were obviously just using an analogy with real names to say Amazon does not have a similar-size competitor or three.

Walmart is a similar sized competitor, though. Depending on how you break it down, eBay is as well. The analogy makes no sense. Walmart is a competitor, Aliexpress, Flipkart, etc.

What percentage of online revenue does Walmart make? How much does Amazon make?

7% vs 40%. Definitely a huge difference, but the majority of commerce in the USA is non-Amazon. If you do worldwide it's way worse.

in no way is it a "monopoly." If you look at growth rates Amazon is slowing and others are gaining

not to mention the comparison is foolish to begin with as Amazon doesn't have physical locations. a better comparison is total amount of sales, in which Amazon isn't even the plurality.

You're moving the goalposts. I only meant to highlight that Amazon has no real equal online and that is it. I'm not talking about physical stores and I'm not saying they're a monopoly.

No, I’m not. I already showed you that Amazon isn’t the majority in the USA. Prior to Covid, when everything was shut down, Amazon was only like 20ish percent.