Fame and success in the Arts is a fickle thing. Sure, talent helps and often wins out, but it also takes luck, opportunity, and usually a string of (often accidental) right moves to make or break someone. In my business it's writers. In the field of jazz, well - think of your favorite/best local musician who isn't known outside your town and compare him to someone with a record deal. Sure, there are the Rollins/Shorter giants out there, but not always that much seperates the local bar bands from the pros with record deals.
Given the crap that fills best-seller lists, movie theaters, and airwaves, it is certainly true that there is often times not much that separates the "success stories" from the wannabes.
Keep in mind the music/movies/books we may like, many others consider to be the "crap". Why I'm pretty sure the music/movies/books I dig are certainly the best to be had, for some reason that person that digs the "G" man, Tom Cruise movies and Nora Roberts books are thinking the same thing....but I'm sure they're incorrect!!!