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4% of total retail sales, yes, but for online sales, it’s over 37%.

https://www.bloomberg.com/news/articles/2019-06-13/emarketer...

37% isn't "overwhelmingly pervasive" either.

Surely you're joking.

That is utterly dominant. Market-shaping, even.

The post above describes a hypothetical universe where Ford sells "all cars," not "one out of three cars." And not "one out of three cars, sold via one particular channel that accounts for a small minority of cars sold."

A single website owning 4% of retail sales is immense.

Also, is that 4% by number of items sold, or by total sale value as a fraction of total market transaction value?

That’s a nice number you have there. Here’s another one: 50% of all e-commerce in the entire United States.