Free-market capitalism, the victory of social power and the economic means, is not only the only moral and by far the most productive system; it has become the only viable system for mankind in the industrial era. Its eventual triumph is therefore virtually inevitable.
Murray N. Rothbard
Economic Controversies, p. 682
The excellent book I forgot to credit was When All Else Fails: The Ethics of Resistance to State Injustice by Jason Brennan.