But of course no one advocates capitalism as an actual philosophical goal, they advocate that it's the best way to distribute our limited resources to get the m

But of course no one advocates capitalism as an actual philosophical goal, they advocate that it's the best way to distribute our limited resources to get the most out of them. So if you accept the existence of natural monopolies it's hard to defend that the inefficiencies of regulating a monopoly to better capture externalities aren't less than the inefficiencies of personal profit maximizing behavior by the private entity with the monopoly.