I looked up the backgrounds of the Federal Reserve Board of Governors. And? A few were professors for a few years and maybe one made it a major job.

The former head of the SEC was also a partner at Goldman Sachs, where he co-chaired their Finance committee overseeing their internal controls, spent 4 years in an undersecretary position in the treasury department, joined the Senate staff and helped write Sarbanes-Oxley, is former chair of the US CTFC where he overhauled regulations for 6 years.

By my count, that's 12 years of high-level federal government experience, 18 years at Goldman Sachs, and maybe 6 years as a professor. And the professorship was after at least 24 years doing other things at a very high level

You seem to confuse cause and effect