Most of the college professors that teach business and economics to campus students don’t have businesses of their own, what an irony?

Listening to the business coach

My Dad has an MBA, we asked him for some help, but he was first a little reluctant, he has an MBA and teaches business at the university, but he’s got no business of his own, when we ask him, “why don’t you stop helping those campus kids and stay here with us helping us build our businesses?” but then he said, “you know things don’t work that way, the coach stays on the bench after giving clear instructions how the game is to be played while the players enter the field to conduct the match, we teach others how to conduct/run their businesses in the most profitable way possible then they go out there to put it into practice, we can’t do both. Bear with me on that please.” he said.