It is entirely possible that he's found the correct price for a suit: two hours' labor for his core customers. It is entirely possible that the devs who tell me their clients won't pay more than $20 an hour for Rails programming are accurate, and that they're correct in thinking that they're not skilled enough to work for better clients. It is entirely possible that the Rampaging Monster of Doubt actually understands how banks do loan underwriting better than e.g. the banker who you could confirm or reject that hypothesis in a five minute phone call.
But that is not the way I will bet. We're pathologically bad at this. Hiya, freelancer on HN: to a first approximation, you don't charge enough. Seriously. No information required to make that call. (This is said from a place of love. I don't charge nearly enough, either.) This guy, who produces things which rich people love and try to shove money at him for, so much so that he cannot afford to even talk to the rich people to take their money because he is so busy? This guy has our problem, too.
Starving artists who are starving because they produce something nobody wants to pay for are one problem. Starving artists who are starving because they think that they are a precious snowflake immune to Microeconomics 101 are an entirely different problem. They just need business sense.
The point of the article is to cry a bit about how the market economy is making true craftsmanship economically non-viable. (It practically tries to club you over the head with that conclusion.) The article is wrong. It has identified a problem to which there exists a trivial solution that will work.