There's a certain pop-libertarianism that does take this Panglossian view that we live in a perfectly tuned universe, where market dynamics, unless interfered with by the state, always produce the best outcomes, recognizing value and allocating resources. It reminds me a bit of some new-agey environmentalism, which believes that ecosystems always work optimally in a harmonious balance, unless humans interfere with Nature's dynamics.

(To be fair, I would say most hardcore libertarian philosophy is based on natural-rights type views, and doesn't make arguments about maximizing outcomes at all.)