Everything said, true. I think we baulk at the idea of our favourite band being used in commercials and all that because we want to keep them "our little secret." I think as long as an artist doesn't allow the use of their songs for something that they are fundamentally opposed to, just to earn money, then they are not selling out. Regardless what people think, they gotta eat! The Black Keys covered it pretty well.
In the UK, Iggy's done car insurance ads and John Lydon's done butter ads! Beats the latest slapstick, nose-jobbed face from The Voice!