SATCHMO

Marketing is a crucial part of running any business, which is what a band is in part. I think people mistakenly equate a bands increased popularity or success with being a sellout. thats not necessarily so.It's OK to make tons of money in every other career field. Why is music different? Nobody ever points the finger at the record company execs who, in many cases are the only ones getting rich off a bands success.
The whole Green Day plague on MB was annoying cuz' kids were associating GD with punk without any exposure to any other punk bands or any knowledge of the genre's history. Selling out is an artists intentional disregard of musical integrity for the sake of generating more income or widening their audience.
Bob Dylan was called a sellout when he made the great switch from acoustic folk to electric rock in 1965, but it was his artistic license to do. His response to people complaining that he wasn't writing political folk anthems was "write your own anthems". Amen.