Business school professors are professors. They've never run any business. They can train MBA students to get hired and promoted. They can keep their own personal money in S&P500 index funds. That's about it.

(EDIT: Even if a few B-school professors have real-world business management skills, why would the university listen to them? They're just employees, and they're not nearly expensive enough to be credible.)

I'm reminded of "Back to School" where Rodney Dangerfield explained to the business professor how business really works.

This is so true! At best business school professors have a side hustle consulting. And you can read in many places about the perils and questionable efficacy of consultants.

What they are-- first foremost-- is academics and fad surfers.