I take exception to the diagnosis! There was never a system of "national" capitalism under which nation-states could make totally independent economic decision

I take exception to the diagnosis! There was never a system of "national" capitalism under which nation-states could make totally independent economic decisions, except during the two world wars. Even in those times, those nation-states made those decisions not for the good of working-class people but for the survival and power of the nation-state itself. The social-democratic "reasonably golden" age was based upon the Bretton-Woods trade system, under which currencies were pegged to each-other and surpluses were recycled to prevent international debt crises. That was by no means an autarkhic capitalist system; it was internationalist social democracy.