I don't agree that "the country is calling for reform from the 2 1/2 centuries of libertarianism this country has already enjoyed." This country has not had anything approaching libertarianism since at least FDR, probably even farther back than the Civil War. How Libertarian was Andrew Jackson? It's the same as how people kept saying that "capitalism/the free market has failed" in the big economic crash when the truth of the matter is we haven't even given capitalism/the market a chance - it's all mired down in 400 layers of central planning.
Rather, I think the nation has only sustained itself as far as it has because of its libertarian roots. The concept of freedom and liberty (with the requisite accompaniment of personal responsibility) is what made a country that everybody from everywhere else wanted to live, and got us started down the path to broad swaths of prosperity for all, driven by the profit motive of the individual.
Libertarianism didn't give us oligarchy, every system of government ever attempted wound up a de facto oligarchy - the elite powerful rule, and if they weren't already wealthy, they became so very quickly - no matter if the attempt was monarchy, commuism, socialism, despotism or republic. Wealth is humanity's metric expression of power, so naturally, human nature ends up with the powerful being wealthy and vice versa.