Oligarchs, with their financial ability to influence mass media, education, and marketing, quickly proved to be the social force most able to manipulate the public will. With all three branches now functionally subject to the same democratic selection pressures it is no surprise an oligarchy came to achieve hegemonic social force in the United States.
Source: How The Total State Circumvented The Constitution
Combine that with this (spoken of Reagan’s effect on anti-trust, via Robert Bork’s influence):
It was obvious from the start that “consumer welfare” was a scam, a ruse designed to let monopolies flourish and to install “autocrats of trade” on their thrones. Despite its ideological bankruptcy, “consumer welfare” was able to repel its critics for decades, because it had deep-pocketed backers – no different from tobacco-cancer denial or climate denial.
And we have all the elements we need to conclude that the US is now a complete corporatocracy, under the control of our oligarchs, or billionaires.
I remember reading a post on Reddit, a long time ago, by a guy who claimed he was friends with a half-dozen billionaires. The thing that stuck out at me was that Congressmen ask, “How high?” when asked to jump by a billionaire, because the checks they can write for campaign contributions can swing an entire election.
Lisa Kahn may make some headway with modern trustbusting, if given the time to get moving with a second Biden term, but with the Citizens United ruling, it’s only a matter of time until the powers that be get her out of their way through a sympathetic administration.