I have come to believe that the Federal 401K/403B/IRA programs made this possible.
These programs have over the decades put enormous amounts of money in to stock funds, money market funds and bond funds.
Almost all of these funds are controlled by these three companies.
The productive people of the United States, I believe, have funded their own enslavement.
That is absolutely a lot of it that helped facilitate the new Corporate operations. But the main credit needs to go to Fink. He turned out to be an absolute genius and restructured the business so that corporation boards could literally do what they want and buy assets they want without any sort of influential checks independent from the shareholders.
This explains how he was able to give investment firms so much power and influence, he innovated it and it has made him the most powerful man in the world:
https://www.youtube.com/watch?v=ZxZO0jd8VoU