The big tag-team that smacks down anarchy is Malthus and Sun Tzu.
Organization is a
huge advantage in a war or armed conflict. Chains of command, logistics, training, discipline -all essentiual. And Malthus says humans breed until there is conflict over resources. Anarchy loses the conflicts.
Best setup for an anarchy would be some science fantasy setup. The invention of cheap wormhole travel, and many lifesustainig planets to go to.
No neighbours, and a very long time until the planet is full.
After the existence of a self-sufficient manufacturing base.
I don't think you get it. The early American colonies were small, and dependent on the metropole for everything but food. However, eventually they grew to be self-sufficient and able to use the resources around them to survive rather than resources shipped to them. It's almost completely analogous to the likely situation for space colonization: Initially entirely dependent on Earth-based resources for survival, but eventually gain enough industrial power space-side that they can support themselves.
There is NOTHING that cannot be gotten in space with the right equipment. It'd be a technically demanding life to support a community on an asteroid, but then again, surviving out on the frontier wasn't easy, either.
The problem is that in space you are not only dependent on resources, but also on skills. The hydropontics specialist, the electrican, sanitation technican, air cycle specialist -you need far, far more skills than any single man can have, and a big organistaion to make sure the next generation always has a good mix of them.