I guess if your point of comparison is "Google search, Apple App Store, Monsanto, Boeing" the poster market on Amazon is "small fish", but this guy was the form

I guess if your point of comparison is "Google search, Apple App Store, Monsanto, Boeing" the poster market on Amazon is "small fish", but this guy was the former director of Art.com (fired because of the price-fixing investigation, I take it?) - almost certainly a multimillion dollar business.