Government regulation and the Fed will continue to exist in some form, at least to some small degree, so you will always be able to claim markets weren't "free" enough to properly implement a free market system. But if that's true, then it's moot; if a free-market system requires absolute purity from government to perform as intended, then it's worthless, because that will never happen. In other words, its proponents admit it's a fantasy that will only exist in their heads. As such, I have no reason to care about it or about how great some people think it is.
Fortunately, most economists already agree that market failures exist, and that free-market economics is bunk.
Fortunately, most economists already agree that market failures exist, and that free-market economics is bunk.