I thought it was the influx of new money printed, which we've done in the form of Quantitative Easing, multiple bail outs, etc.
"From 1978 to 2021, CEO pay based on realized compensation grew by 1,460%, far outstripping S&P stock market growth (1,063%) and top 0.1% earnings growth (which was 385% between 1978 and 2020, according to the latest data available). In contrast, compensation of the typical worker grew by just 18.1% from 1978 to 2021"
Source: https://www.epi.org/publication/ceo-pay-in-2021/#:~:text=Fro....