There's some other theories why everything changed in the early 70s. https://wtfhappenedin1971.com/ has a nice compilation of them and their downstream effects.
"Could we ask for our $47 trillion back? Not directly, but we could certainly tax the 1 per cent at 90 per cent or higher for the next century or two, and not feel guilty about it."
Too bad corrupt politicians and mass media will prevent this from happening.
Only for the lack of sufficient pressure / mass action due to many reasons, including the rejection of possibility of success.
Trickle down economics is contingent on the dam-keeper deciding to let water trickle through.
They can also just... not.
Another total misrepresentation of the paper, worse even than the one in BI the other day. Literally fake news.
Do yourself a favor and read the paper, but first read up on how GDP is calculated.