The institution does not appear to be in the wrong, here. I'm a little confused as to why this gentleman feels he should be entitled to take his self help book

The institution does not appear to be in the wrong, here. I'm a little confused as to why this gentleman feels he should be entitled to take his self help book tour to his (kinda sorta) alma mater. In any event, what are his accomplishments? I would tend to think that if he had something substantial to offer, he might stand a better chance of being invited to speak. As Steve Martin once quipped, "be so good they can't ignore you". Clearly, this guy is quite ignore-able.