Re: Max Keiser - "Libertarians are Intellectually Lazy & Idiots"
Libertarians believe in no government and survival of the strongest. Historically Libertarians practice continuous warfare. https://en.wikipedia.org/wiki/Anarcho-capitalism#History Other than Vikings living through raiding unsuspecting villages, I don't see a culture of selfishness actually working. Eventually collectivism of some sort will overpower warlords.
WTF have you been smoking?
You take one example, of Medieval Iceland, twist it all up wrong, and say "historically Libertarians practice continuous warfare"? Come on, man. Nobody can be that stupid. You have to be trolling. The Vikings were from Norway.
Tell me how a society based on this practices continuous warfare.
You're looking at the non-libertarian potions of the offered example societies, and saying, "see, libertarianism promotes these bad things" The problem is, that portions of an AnCap society have been implemented, but never the whole thing before. So any (non-fiction) example I give you is going to have holes. I can give fictional accounts of what an AnCap society might look like, if you'll take those as examples. I can give you theoretical constructions of the entire society, as well.
But to answer the original question, Why hasn't it been done before, the answer is pretty simple. The gangs who claim to be in charge of the land where we might set one up seem to feel that our trying would be a threat to their control. That, in and of itself, is all the evidence I need to be confident that it would work.