I'm one of the founders of Virtualmin, Inc. We were a Y Combinator company in 2007. We are still in business and profitable, and growing (though slower than I'd like, of late, but I have pretty good theories on why we have slow growth and we've begun correcting the trajectory). I make less money than I did doing contract work, but I'm much happier and don't often have work-related stress anymore (being an IT contractor is being the guy who has to fix things Right Now!, because for many businesses, by the time it's bad enough to call the guy who charges $1000/day, it's pretty darned bad).