The core parts of Libertarianism that should be included as building blocks of a society are freedom of association, and an Austrian school understanding of economics.

But Libertarianism is not sufficient for a society. Libertarianism deals with the logical, but most of the problems are moral and cultural. Libertarianism is built in economic ideas and pretends to be a moral philosophy.

As a holistic model, it has no answer for (and often logically encourages) all sorts of societal ills, like strip mall blight, employer mandates, the toxic factory going up next to your neighborhood, degeneracy in general, consumerism, corporate farms, Walmart out competing local stores, etc

If you listened to the Reason Magazine during the lockdowns, they basically said, "ackshually Facebook censoring content and employer health mandates are fine, because they are a private company." Worse than worthless positions to hold.

For example, what is the libertarian argument against ESG funds?

What is the libertarian argument against a handful of giant tech companies controlling 99% of social media and pushing leftwing ideology?