The wealth that results from private enterprise is very much a social construct

Our understanding of the optimal economic model is often oversimplified and stylized by the left and right, alike. "The wealth that results from private enterprise is very much a social construct." - This is a fascinating read - I do not know if the data cited paints a robust picture and there is a question of causation about the gains in quality of life of people in the US in the post-war era. Thoughts?