Earlier quoted context omitted.
I read "stock buybacks in 1982" as shorthand for "financialization and short-term thinking at the expense of long-term gains", which certainly happened across corporate America and Britain starting with Reagan and Thatcher.
In tech it was the switch from creative corporatism, which is focused on opportunities, invention, and infrastructure, to extractive corporatism and oligarchy, which are focused on scams, exploitation, and the creation of rigid hierarchies of privilege. We're now in the end stage of the latter in the US. The US still plays at invention - or rather a few of its oligarchs do - but it's far, far behind what's happening…
Oligarch is a specific thing with a specific meaning.