We study the dynamics of the profit rate of United States (US) non-financial resident firms between 1945 and 2020. The 1970s entailed the abandonment of industrial policy and the liberalisation and globalisation of markets. This left the US-resident productive sector at the mercy of an unstoppable growth of imports. These imports helped to contain inflation but cornered the US domestic market, which negatively affected the profit rate of non-financial resident firms. The increasing foreign competition forced US-resident firms to invest and increase their productive capacity. Such increasing productive capacity demanded higher market shares; however, US-resident firms continued to lose domestic and foreign markets. This explains the fall in the degree of productive capacity utilisation, capital productivity, and ultimately, the rate of profit since the 1980s.
