“The House” in your usage means the guy with the biggest guns. Someone who has read literature by people such as good ole’ Niccolo should know that having the biggest gun isn’t what’s important, it’s what you can do with it. As I pointed out elsewhere, an anarchist society is not only at an advantage because it is the defender, but also because it’s lack of central administration gives the invader no particular target that will win him the war. Also, a statist army is likley to use “conventional” tactics, fighting against a force that doesn’t play by it’s rules.
Of course, an anarchist society could be conquered, it just isn’t as likely as you would think.
You also assume that mid east terrorism against the US is simply a phenomina that has occured, and continues to occur because we are “free”. The ideological heads, and those who worship them might feel that way, and the US government screwing around in their lands doesn’t help with that perception, but such groups rely a great deal on local support. If you bomb people, they get angry at you, and they are more prone to believe that you are not only a baby killer, but a child molestor as well, a fiend. if they believe this, they WILL support people who try to wipe you off the face of the earth.
If someone attacks you when you have done nothing wrong, you can persue justice, and defend yourself, but through the state, which is at war against it’s people at all times, you gain nothing. Osama hasn’t been captured, mid-east terrorism continues to threaten the US, and the government has been incompietent to end this criminality because it itself has a degree of responsibility for the current situation. There were plenty of ways to get Osama that didn’t involve the state, mainly a massive bounty hunt (Which wouldn’t require civilian deaths, also it wouldn’t be as easy to detect a lone assassin, or a group thereof, as opposed to a massive armed force).
It is far easier to adjust to the problem of force in anarchy, than it is in a state with a monopoly on Law AND enforcement. If you have a national military, how easy is it going to be to change the government? Also, the people voted in the politicians who got us here in the first place, what makes you think this won’t happen again? They have every reason to expand the size of the government at the expense of their neighbors, until the state comes for them too.