It seems to me like a lot of left-leaning commentators have a sort of vested interest in maintaining this pseudohistorical divide between "embedded liberalism" from around 1946-1974 and the "neoliberal" period since then. Many of them never lived through or remembered this period (neither have I), so it serves as a sort of utopian benchmark of hope that we should return to.
A more accurate picture to me would be a virtually constant period of state-merchant/corporate coalition since the mercantilist era after the dismantling of feudal relations, to the present.
(After all, it was the Golden Age of Capitalism when the Truman Doctrine was in full effect and the United States had some of its greatest foreign policy ventures, a true renaissance for the military-industrial complex.)