Apple is making the exact same mistake the RIM made. They've gone from targeting hardcore fans, to targeting teenagers. The problem is that teenagers are quick to jump ship to the coolest new thing. Apple has been making "coolest new thing" for a while, but they're getting really popular now, which seems to be inversely proportional to "cool". For RIM, they moved away from targeting hardcore, email-addicted business…
And I think it's because of the fact they thought their 'hard-core fans' would stick with them put them where they are today , not the other way around.