Cat-herding is an insufficient metaphor for getting tenured professors to do something.
I work with some of the finest professors in the world. By and large, this means they are exceedingly competent in their field and quite competent at teaching. They are also experts at managing their time, which translates into not wasting any time on things that aren’t important to them.
This makes interactions difficult for anyone who is neither inherently important to them, nor willing to become unpleasant enough to graduate from ignorable to an important problem.