One giant exception was Chuck Feeney, who made $8 billion on duty free shops and gave almost all of it away, much of it anonymously. By the end of his life he and his wife had a couple million and lived in a rented apartment.
Some were more emotional than others, but one of the proponents was very touched, she admired Parton so much because Dolly set an example of how to be as successful as a person can be, and not keep a billion for yourself.
I can't find the clip now, but it was from the heart.