I know of one tenured professor in a pretty big East Coast college who spends his time finding graduate students about to launch a start-up, and then demands 20

I know of one tenured professor in a pretty big East Coast college who spends his time finding graduate students about to launch a start-up, and then demands 20% equity or threatens said students for working on commercial projects on college time. Guy is easily a multi millionaire through this alone right now.