I think many start ups are de-facto anarchist in the sense that tasks and decisions are made laterally and without regard for status. In fact most human organisations reflect anarchist principals at the small scale, the anarchist program is merely an attempt at scaling these tendencies.
>If you want to get something done you have to start off by putting in the work, then as other people see you being effective they join in and contribute their own energy and ideas.
This sounds exactly like a start-up and the way occupy is/was organized.
The spirit of iterate like mad, fail quickly and replicate successful ideas, much of which comes from modern military thinkers (for instance John Boyd's OODA loop -http://en.wikipedia.org/wiki/OODA_loop ). Such theories actually have deep utility in adversarial settings.
>Unfortunately this kind of organization, while good at empowering individuals is bad at quick tactical responses such as when facing a well organized adversary, such as local politicians and police.
I would argue this form of organisation is excellent at quick tactical responses, but generally bad at longer range strategic plans (which is generally ok, since long term strategic planning is near impossible at the tempo of modern business/conflicts). Look at the shift in military affairs toward pushing decision making down the change of command (what is often called network centric warfare).