The Valve model is the one you want to read. This is one of the most effective culture builders ever created. My first startup had a similar approach although we called it "chaos".
http://assets.sbnation.com/assets/1074301/Valve_Handbook_LowRes.pdf
"That’s why Valve is flat. It’s our shorthand way of saying
that we don’t have any management, and nobody “reports
to” anybody else. We do have a founder/president, but
even he isn’t your manager. This company is yours to
steer-toward opportunities and away from risks. You have
the power to green-light projects. You have the power to
ship products."