Meanwhile, the proof of concept for societies with no state is what, a small group of guerillas in Mexico, with a low population of farmers in the mountains? The Paris commune that lasted like a week?

I'd rather cite the NGOs that actually do the work the state farms out in the modern era. As much as I hate this model and believe that the state "should" be directly employing those people if these are to be state responsibilities, the fact is that they just throw a small amount of money at them and then wash their hands of the situation. It's small non-state organizations that are actually left to figure out how to fix things while not being empowered to do what needs to be done. Meanwhile the state holds all the levers that need to be pulled, and won't pull them.