I’ve heard when republicans lowered taxes on the rich it took away the way we regulated corporate greed. We taxed anyone’s income above a certain amount so much they didn’t bother. So they invested all that money back into the business. Gave employees raises and insurance.The video in the OP is one giant Post hoc ergo propter hoc fallacy. The driver isn't the relaxing of laws related to mergers and acquisitions. It is because of IRA's, 401K's have added immense pressure on publicly traded companies to force growth by any means possible.
So today CEOs pay themselves like baseball players. They and all their generals get all the money. The shareholders get some and they don’t complain because the coward of directors of your company is a bunch of CEOs of other companies. They are doing it too.