Brad, how many people do you think are informed enough to make rational consentual choices? Think about it... In a society where only 65+/- % bother to vote in free and fair elections and even less of them actualy bother to make their choice a non-partisan one where do you think our society would end up without at least a modicum of "this is the way it is going to be"?
Perhaps the best predictor is the market. Wherever the market is free and efficient, consumers participate fully and enthusiastically, choice is high and prices are generally low. Think about that whenever you go out to buy groceries.
The political system is (deliberately) an inefficient market. Choices are limited, information about the market and "products" is limited and the consumer (voter) can only shop (vote) at irregular intervals, usually measured in years. Political parties control the process to the extent they can get away with, and a permanent bureaucracy also works to limit voter power while it enhances its own. Taxpayers and voters do
use the available information to make rational choices whenever and however they can, although it can take the form of tax evasion, capital mobility and labour mobility. The ones with the most resources have the most incentive to move away from high tax and high regulatory environments, taking their investment power with them. (The wealthy investor acting rationally may not be overtly Libertarian, and I would suspect many such people would never claim to adhere to the Libertarian philosophy even as they act upon it).
"This is the way its going to be" has a place, particularly in emergency situations, however short of war or natural disaster there is very little reason for government to invoke these sorts of powers. Of course, by claiming regulatory failure and unintended consequences of government regulation are "market failures", they create their own permanent emergencies and use these excuses to extend government powers.