Economic liberties means choice and competition in a market without state-enforced monopolies. US healthcare costs are an outlier because the state enforces insurance cartelization. Obamacare was a gift to insurance corporations, forcing everyone to buy their product. It's inelastic demand at gunpoint, so of course prices are going up.
Look back at the history of healthcare to see economic liberty in action when we had a workers' self-organized healthcare. People formed friendly societies, worker cooperatives, and lodges creating a welfare system that was organized from the bottom up. It was well-organized, affordable, and voluntary.
That all started to change as progressive legislation was introduced in the guise of social reform, which built up the state capitalist bureaucracy and slowly eroded people's rights to self-organize and provide each other with mutal aid. Instead people were forced to depend on the centralized state/corporate welfare system. And here we are today, and things are only getting worse.
The healthcare crisis is a problem of artificial scarcity, enforced by the state regulatory regime which upholds the insurance monopoly and suppresses people's rights to self-organize.
> The large corporation and centralized government agency do not exist just as discrete individual organizations. Beyond a certain level of proliferation, such large organizations crystalize into an interlocking system. Even the small and medium-sized firm, the cooperative, the non-profit, must function within an overall structure defined by large organizations. [1]
[1] https://c4ss.org/wp-content/uploads/2010/03/C4SS-The-Healthc...