Well, LJay, Bill Condon did mention that he was planning on doing it (using Chapin's book as a starting point) until he met resistance (the Bennett state most likely) and plans fell through so perhaps MichaelBennett wasn't so wrong after all.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"