Libertarianism has the idea that "some corpo will do it". It sucks ass just as much, if not more than, 21th century capitalism. Minimal government intervention means the worst people (who are always the best businessmen) will become the sole providers of healthcare, water, sanitisation, food, etc etc. I'd rather not live in that world. Authority is needed, either through central or (more complicated) decentralized means.

Libertarianism relies too much on the idea that corporations will keep prices low to maintain a liveable society. Fuck no. Why the fuck would they do that??? Have the stock market dominators ever done something nice for the common plebs in the last century??