As for the speculations about how things will be in a free society, we've already addressed that. I offered the quote:
"When one is asked to speculate on the unknown, one should not anticipate pragmatic answers." - Dr. Demitrius, Blood Beach (1981)
There is no reason why the anarchist should be made responsible for satisfying these concerns. We may oblige as a kindness, but we're not selling something here. We're pointing out that governmental authority is immoral, invalid, non-existent. That's it. The historical results of ignoring this fact have been a body count in the billions, and theft on a scale impossible to fathom. If that's not sufficient motivation to change, I'm not sure there's any hope in answering questions about roads and firehouses.
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Actually I would say that it is the responsibility of the one making the change to satisfy the concerns, or the change will never happen.
While in the Marines I had the opportunity to go through the Six Sigma training before anyone really knew what it was going to become. One thing you learn about bringing about change is that there are two required steps, first you have to identify the problem, but even more vital you have to have a solution that can be sold to the ones you are wanting to make a change. There is an old saying, if you do not have a solution you are part of the problem.
You claim you are not selling anything, and that is true only if you do not wish to see a change, if you wish to eventually see a change you will have to sell a solution.
While in the Corps I had my orders changed and was sent to a different duty station for the sole purpose of fixing a broken shop. Once there I IDed the problem, devised a solution and then sold it to my OIC and his boss.
You can point out the body count of government till you are blue in the face, but until people are given a reason to change, they will not do so. People will not change for a theory or a logical argument, change needs a driving force and theoretical arguments will never be a driving force.
I would say that the vast majority of what we do in daily lives is done out of nothing other than convenience.
I could grow my own food and hunt my own game, but other than my herb garden, but instead i get my food from the grocery store...because it is easier.
I have an older car that just had the AC compressor go out and has a few other problem. I could replace it and try and fix the other problems, but instead we are trading it in and getting a different car. It is an easier solution and one that make more long sense in the long run to my wife and I.
Government is no different, it is simple and easy. It is the ultimate convenience. If you wish to replace that, you will have to have a solution that people perceive as being a better way of life for them.
Till you can do that, this is all nothing but a thought exercise.