Capitalism is arrived at through two primary ways
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.
Except that a person born has rights granted to them about land and property mostly decided on capital. Very few farmers can refuse to sell the a megacorp. If you think this has no impact, find some un-used land that you have not inherited or purchased using capital and see how long you can grow food on it before someone objects. They might say it is a park, or a front yard, or a military training ground, but realistically, all those concepts of ownership were originally tied to capital and without substantial capital, you are a serf. A lesser. There is no commonhold for you to use. There are no unclaimed natural resources.