Where would some 14 year old hear about the Beatles, though? Let's say they aren't passionate about music (which would inspire them to seek out stuff that's not on the radio). Let's say their parents aren't big music lovers, so they're not going to hear it from them. They're certainly not going to hear the Beatles on whatever "hot jams" radio station they probably listen to, and they're not going to see it on MTV.
I don't find it too depressing, because of that. Kids who love (or will later find their love of) music will discover stuff on their own time. Maybe right now some of those kids are too busy entertaining themselves by saying stupid shit on Twitter to care about music, but for some of them, someday they will be shot through the heart by the Cupid of Music, and then they'll be aces. Aces, Johnny!