>> Cognitect does not make money from Clojure. Period.
But it makes its money because it is the company of the creator of Clojure. AFAIK the company was started after Clojure gained traction. That means they are well compensated, that's as good as money, IMO.
Reading the original post and this, I don't think Rich Hickey is a good citizen of the F/OSS community. F/OSS is not about cost. It's about sharing.