You might hit a paywall so I'll sum it up and quote the key part.

The premise of the article is around the formation and success of labour unions in the USA during and after WWII. The war pushed everyone to massively grow production and industrial output. Global competition was decimated by the war, giving the USA an opening to dominate, and they did, for awhile. But the unionization added a heavy cost to American businesses that Asian ones did not have. Capital that may have been invested in research and new technology instead went to pensions and benefits.

When Europe got back on its feat, and OPEC asserted its dominance, the economy suffered through the 60's and 70's until the rug pull of the gold standard.