Fortunately, they failed. They tried to recruit a populist veteran into their ranks who had no particular love for a government that had abused its World War I veterans... But had less love for a bunch of (essentially) early-twentieth-century technocrats that had profited off the sacrifices of the veterans. He refused to keep the conspiracy and blew the lid off it, and his reputation was both public enough and spotless enough that the conspirators couldn't either silence him or tarnish him.
Wikipedia overview is here: https://en.wikipedia.org/wiki/Business_Plot
There are better scholarly sources for the details, but an entertaining source for a summary is here: https://podcasts.apple.com/us/podcast/behind-the-insurrectio...
(The conspirators were never prosecuted. One hypothesis as to why is that Roosevelt saw an opportunity and co-opted the plot: some of his New Deal policies were facing pushback and he might have put on the table for the conspirators "You can dodge a treason trial if you just back the new policy with your capital and your political will").
(p.s: I probably shouldn't extrapolate this historical anecdote to the modern era, but this story does give me reason to wonder if a rule like "In the industrial era, massive inequality due to under-regulated capitalism leads to attempts at reform, and those attempts breed counter-reform in the form of fascists and their sycophants formed by those who perceive they have the most to lose in reform..." might hold water).
