Why is AnCap anything but a bunch of micro states, each with their own model of taxes and fees? And why is that better, for fuck's sake?
1. That's not what AnCap is.
2. A "city-state world" would be much,
much better than the current world, nevertheless. And that's simply due to competition. If it's easy to emigrate, you can "vote with your feet". Emigrating is quite tough when you have to cut your roots and links. But when it's just moving to another city 100km away, you're not cutting any serious root, you won't face language/cultural barriers etc. In a city-state world, "bad states" would easily lose their subjects to the neighboring, "less-bad states". Such competition would push good policies and kill bad policies. Think of state subjects as "costumers of governance", which in this scenario can change their "governance providers" much easier. In our current world, changing your "governance provider" is something extremely expensive (difficult) in many ways, and "startup governments" are a practical impossibility. We are hostages of inefficient monopolies.
3. Now change "moving away to a neighboring state" for "resigning your current contract and signing a new one" and you have perhaps a summary of what's actually a decentralized law system (AnCap)
You're funny. Why do you make the following assumptions:
1. Moving to another city-state would be easier than moving to another country (aside from language)?
2. City-states wouldn't merge for security and/or economies of scale?
3. Free trade between city-states would magically be optimal the way you see it?
4. Trade and travel across city-states would not be fraught with transit fees, tariffs, taxes, tolls and so on?