A lot of people like to say that art isn't/shouldn't be/can't be "just a product". Although I tend to think of art in very cynical, functional terms, I actually agree with them to some degree. If you buy into Denis Dutton's ideas about the purpose of the arts being to provide people with glimpses into the souls of other people, art is an unusual and slightly fuzzy product. In addition to the physical medium (or reproduction), the product that is art also contains a little glimpse into the mind and personality of its maker. It's not "selling your soul" in the way Faust did, but it is renting out access to some part of it. In this way art works the same way prostitution does. (I wouldn't suggest they're morally equivalent, though. Most prostitutes are much nicer and more useful people than most artists nowadays!)

This is why protesting that "I'm only in it for the money", "I'm only doing what the people buy", "it's not my band, I just work here", "I don't have a soul" and so on will never really work. Even if you believe it, the public never will. They will always assume that you are giving them a window into yourself. Conversely, that doesn't mean that talking about revealing the depths of your soul makes you any better than anybody else - all art does that anyway. Explicit soul-baring doesn't make you any more artistically valid and if you overdo it you just end up being annoying.