Simple economics implies that government enterprises should be far worse than they really are.
I am reading (admittedly a bit late to the party) Peter T. Leeson’s collection of essays on anarchy. In at least one of the essays, he takes the view that the cultural margin is more important than the institutional margin. That is, he seems to be saying that there are no societies in which anarchy will work well but government would work poorly, or vice-versa. Instead, on the one hand there are well-developed cultures, which could have good government or good anarchy, while on the other hand there are poorly-developed cultures, which could have only bad government or bad anarchy.
I have referred often to the debate about the relative primacy of culture and institutions. I tend to side with the culturalists. The classic institutionalist counter-example is Korea. I think that it is reasonable to suggest that North Korea would be much improved under anarchy. But in general, I think that Leeson’s view, which I take to be one of cultural primacy, holds.