Back when America had the highest rates of growth and investment was the time one in three Americans belonged to a union (now under tenpercent) and nonunion workers could unionise so easily that nonunion companies had to keep pace with union wage and benefit increases or their workers would unionise meaning back before 1980 American labour was effectively fully unionised.
Here's productivity:
Productivity fell off due to the two gigantic oil shocks in the seventies (in 1973 alone the price of oil quadrupled overnight). It picked back up in the nineties and 2000s due to Microsoft which is a one in a lifetime kind of productivity jump and we'll probably get a similiar jump when AI bears fruit in a decade or three. But look at productivity right now. We've had forty years of successively smashing the unions, every single "business friendly" policy (slashing taxes and regulation) that business wanted and look at the situation right now. Really low productivity, the lowest levels of investment in the modern era and a massively unequal economy. De facto nionisation of labour back in the day certainly didn't affect producivity too much, did it?
Amazing that high taxes, a properly regulated economy and strong unions provided much better economic growth that was broadly shared, not shitty economic growth that all goes to top earners with three quarters of Americans living paycheque to paycheque.
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