For example, I can truthfully say that I am currently employed at someone else's company (a startup that I am consulting for), I am a freelance contractor (for the startup I am consulting for), owner of my own company (an apparel and design studio that I am currently working on with some close friends), and I have numerous side projects including my own startup. If I feel like I should select multiple options, then I'm sure others are having the same problem. I don't think the options in the poll are leading to an accurate answer to the question.
I think the real question is what the percentage of cubicle dwelling office workers being watched over by a boss is compared with the percentage of self employed, freelance consultants.
My initial estimate was that there would be more self employed individuals with self control built by working for themselves, and fewer cubicle workers who are trying to sneakily browse HN behind the back of their bosses.
This poll hasn't answered my question one way or the other though.