The goal of any career is to be successful in that career, why should it change when it's in regards to music? Sure, I wholeheartedly believe that any art should be from the heart but as long as your not betraying yourself than whats the problem? That being said I do believe that there are some "few" actual sell-outs(god I hate that term) that do not care about what they're playing, don't do it for the loe of music and just do it for the money. Do I like them? No. Do I respect them for making it in a dying career? Absolutely.
That's what I said. If you compare it to any other career, who wouldn't take a "promotion" or anything else that involves making more money?