I'm reading it thinking, "Hmm, do I really hate working for other people that much?" I've run my own companies since I was in my early 20s, and have never taken on more than contract work for others. But, I've very rarely been able to pay myself as much as even modest developer or IT salaries at big companies in major cities.
But, that may mean I just need to stop trying to make a living out of Open Source software. ~20 years of it might be a sign it's time to try some other approach.