It is a truism of economics that widespread increases in productivity are required to generate equally widespread increases in income and capital, i.e. productive wealth. To the consternation of many, productivity has stagnated since 2010; no wonder household income for all but the upper crust has gone nowhere…..In this below chart of the distribution of wealth in the U.S., we find the same correlation to the downtrends in productivity and labor’s share of the economy. The bottom 90% of households’ (the many) share of the wealth pie topped out in the early 1980s and has declined precipitously since, while the wealth of the top 0.1% (the few) has more than tripled since the late 1970s:
https://www.peakprosperity.com/blog/113693/pie-shrinking-so-much-99-beginning-starve