40 years between 1930s and 1970s were anomalous period when industrialists shared a larger fraction of their profits with workers. Partially due to stronger uni

40 years between 1930s and 1970s were anomalous period when industrialists shared a larger fraction of their profits with workers. Partially due to stronger unions then. The service economy became a larger fraction of the economy. They were more stingy sharing with service workers.