One is utilitarianism. Capitalism, or possibly hybrid capitalism, depending on your viewpoint, has been correlated with the largest lift of people out of poverty in all of history.
The other is ethical. If you start with the tenant that each man owns himself, and therefore his labor, and therefore the fruits of his labor. And that he can mix his labor with unclaimed natural resources, and thereby claim that mixed labor. And also, consensually trade those fruits with others, unmolested by 3rd party violence. Then you will end up with an economic system based on private property and capital largely controlled by for profit enterprise, which should approximate capitalism.
I believe only in the utilitarian case might it be that it be intentionally arrived to as a method of making decisions, rather than the way decisions being made more as a byproduct.