Gothampc, I simply don't agree with the assertion that his music is not hummable. Songwriters who write 'unhummable tunes' like "Stars and the Moon" don't have people all over the planet performing and recording those songs.
Musical theatre is not about leaving with a tune stuck in your head; it's about experiencing something in the theatre. The full range of human emotion is not expressed in humdrum A-B-A-B song structure and I-IV-V chord progressions. If your desire to experience musical theatre is mutually inclusive of your desire to leave with a song stuck in your head, then I'd like to suggest that the lofty emotional heights of Vegas casino shows may be where you'll find a permanent, pleasant home.
The aim of some forms of musical theatre may be (and should be)to entertain; it cannot be the aim of all... or of all art, for that matter. When we arrive at that sad place, we are stagnant as a culture.
Re: the article and JRB's "failures": I have never understood where this Broadway-centric attitude towards "success" comes from. Not every piece of theatre is best-suited to a New York crowd, in a theatre with 1200 seats. Rosie O'Donnell would do well to take this as a lesson.
In the article, JRB is referring specifically to his success on Broadway -- which is entirely different from his success, in general. He has a dedicated following, and his material is being licensed for production all over the world. Compared to a great many songwriters of his age, he's doing pretty well. He's got 50 years of music left in him: let him take his time.
"There are only two tragedies in life: one is not getting what one wants, and the other is getting it." -Oscar Wilde