Somebody let the rabble in.
Brill's article is a brilliant game of self-deception and self-aggrandizement. If you read the original article, his thesis is basically that: after the war, universities started admitting students based on intellectual merit instead of their parent's social or financial situation. This led to a large supply of brilliant and educated people like Brill who gave corporations the mental horsepower to overpower the system.
Ahem. Sounds more like the storyline of the crack epidemic as told by the government, i.e. cheap, plentiful drugs overpower societal controls, aided and abetted by misguided, high-powered individuals. Brill is suggesting that universities graduated mainly high-class idiots until he and his generation came along. According to Brill, this movement was caused by powerful, well-meaning people who forgot that My Fair Lady is fiction, thought that they could mold smart boys into gentlemen. (Not trying to exclude girls & women here, but the white-male privilege thing was still going strong at the time.)
BUT, maybe Brill is on to something: his new generation of non-old-boys-club graduates were not only smart, but free from the old-boy social restrictions on behavior. These were people who were not bound by--and probably scorned--the rules of gentlemanly behavior. They didn't have to worry about being shunned by "society" when they pulled nakedly sharp moves with bad societal consequences. Or at least they didn't have to worry so much about what people would say if they got exposed.
I wasn't there, but I get the impression that there was an unwritten code of behavior among the powerful until Brill's generation came along. It was unwritten, but it was a powerful force that limited government & business action as surely as the constitution. That's gone now.
In its place, we now have "greed is good." Except in jest, stating that in public would have gotten you kicked out of any respectable gentlemen's club (no, not a strip joint -- an upper-class, male-only social club) 60 years ago. Yes, greed is an energy that has power, but it ends up consuming everything, much like anger is an energy but only in small doses. And greed has indeed consumed us.
The constitution and the government built upon it are no substitute for basic social norms. I'll bet that guys who wrote the constitution just assumed a certain social code (we do know these were religious men) as a backdrop to a constitutional republic, didn't even think that "men of good will" could rise to prominence without it.