Who is talking about commerce? It's about using emotion to lead people to make irrational choices. If you need rice and I farm rice, and I sell you some rice, that's commerce. It has however NOTHING to do with anything Bill Hicks ever ranted about. So don't flatter yourself I'd say, your insight isn't really one.

"The other thing to remember is that art-with-a-capital-A was largely an invention of the Romantic movement"

The idea that washing your hands is a great idea for doctors and in general is also fairly recent; so?

"in fact it creates a fictional view of the Artist"

No, it simply raised the bar. How can it be fictional if people existed and exist that fit the description? That's just wishful thinking on your part so you don't feel too bad for going back to sleep.