I think the difficulty here is the ambiguity of what is or is not in the best interest of the University. Also, when is someone a private individual versus representing an employer.
Another difference is whether you are an "at-will" employee (someone who can be fired for any reason... such as a television show getting cancelled) or a tenured professor.
Really, I think in television, if you do anything that threatens the broadcaster and/or it's revenue, your job is at risk. In a University, you're supposed to be able to pursue the goals of education, and not the shareholders.