So first of all on blaming previous presidents, this isn’t a case of blaming a specific person. This whole thing is a result of our system and goes even farther back from Bush and Obama. For obvious reasons the FDA and CDC are and have been risk averse. This is all based on good intentions, “we want to make our tests because we know they work right.” The problem is what we are seeing now, if a mistake is made it all falls apart, not only did we not have the tests we need, but even now we are still slow because these institutions are dragging their feet. They aren’t doing this because they are bad people, but because the way the system is set up.
Now, to the point of railing on libertarians and free markets. I am not intending this to be insulting or anything, but this is a common misconception non libertarians have as a result of being fed news from your POV. Libertarians are not anarcho-capitalists (ANCAPS), and libertarians do not support anything like a black market. As an aside, libertarians don’t like black markets because they tie people’s hands around what to do when issues arise. If someone screws you over you have no civilized recourse, this is partially why drug cartels are so violent. They can’t go to the government to get help.
Which brings me back to my point, Libertarians are not Ancaps. Like any political ideology people differ on specifics, but the vast majority believe the government has an important role in society, cops, firefighters, judges. It is suspected, and is probably true, that this originated from a “wet market”. I have not seen anything that says the Wuhan Seafood Market, the one in question, was a black market. In fact everything I’ve seen points to the opposite. These kind of markets are not an exclusively libertarian or black market, they are fairly common in Asia, and are legal. I would say to be cautious not to just lump wet markets together and vilify them, it is not only wrong but a bit culturally insensitive.