yep, this sums up my wants as well. the thing is, people don't pay for that unless you're already established or the thing you want to learn and talk about is hot. and hot things cool, so you'll need to find new interests that people find hot to learn about. etc.
but there's a huge upshot to self employment as i see it that the author didn't mention: you don't have to hide.
you don't have to hide your time from your bosses.
you don't have to hide your interviewing with other places.
you don't have to hide your sense of humor to avoid offending coworkers.
you don't have to hide your wisdom or knowledge for fear of messing up the office political situation.
you don't have to hide your true values anymore; you don't have to pretend to care about the company.
sure, you lose some stability, but who cares. stability is too often another word for stagnation.