Wellllll it's kinda the whole thing with Objectivists. Like, "altruism" is a bad thing to them.

But I agree there's a lot of "straw manning" and value-judgy words there. "Ruthless" could be "driven". "Opportunistic" could be "sees opportunities." And "plunderers" directly implies theft, which is completely outside the scope for free market capitalism.

On the other hand, judgmental wording aside, this is the basic argument of Adam Smith -- "It is not from the benevolence of the butcher, the brewer, or the baker that we expect our dinner, but from their regard to their own self-interest."