Just met a friend in Chengdu who runs an Amazon business; last year he netted over 700,000 yuan, and last month he dissolved the company.

It's not that he lost money; he did the math: after deducting two employees, office expenses, and promotion costs, what he kept was about the same as when he was working alone in 2019.
After all the back and forth, it all came down to working solo with one computer.
Before leaving, he said a sentence: "Scale is for show, profit is what really matters."