All you have done thus far is critique. As they say, the most dispensable person in the theater is the critic 
Ought I leave that role to you alone?The notion that something is perfect, or even best, simply because it succeeded is the death of innovation.
The notion of success being an indicator of worth is the fundament of every attempt to validate the unregulated free market & similar socio-Darwinian baloney
Of course it is. What survives is what survives "What is best" is a predicate without a subject (Best for (what???)).
The free market is guaranteed to give us simply that which survives (succeeds), nothing more or less.
"Panglossian monadology"? Leibniz's "everything that is, exists according to reason, and thus this world is the best of all *possible* worlds"? The sage words of Killdozer further clarified that metaphysical stance for us, the modern scholars:
Let me tell you something my friend
In the best of all possible worlds
That is to say
In this world as well as all other worlds
Why i'm the best of all short-order fry cooks!
Is your premise that the free market produced all the governments, and because they are here is why they are good? Or is this a reductio ad absurdum of someone else's straw man?