In addition to penning legendary songs, he has written a best-selling autobiography and produced and performed a one-man show about his life on Broadway.
Artists like Springsteen make the bulk of their earnings on the publishing rights of songs.
I'm no math genius but at 5 dollars times 26 million customers, that means they are making over a billion dollars more just on the Gold members, and twice that amount on Executive members. That's before you buy anything in the store.