Certainly, Austrian economics is about 100 years old.  Fabian Socialism is about 100 years old. Keynesian Economics is the same.  Communism is slightly younger, so are New Deal and Great Society models.  I think that what a lot of "free-thinkers" fail to notice is that the successful "powers that be" members follow the oldest rules of success.  Subtle or overt slavery, marketing hero-worship, theft through warfare, constant surveillance, and monetary fraud.  None of these new theories have much in the way of a predictable future compared to the last 20,000 years of known history.  All of them have their adherents.  Anarchistic models, on the other hand, have been with us as far back as we can measure.  The Apache "Nation" beat the hell out of Spanish invaders for an extraordinarily long time because every single one of them was a warrior.  I haven't the slightest idea what they had in the way of an economy, but I do know that they very nearly won against seemingly overwhelming forces.  What tripped them up was technological differences, not tactics.