While I will agree with you about the annoyance factor when art or classical music is downgraded to a background score for a commercial (Pachelbel's canon for coca cola); still, maybe there is someone who finds the tune so entrancing, that he searches for it and gets introduced thus to the original composer. It all comes around somehow in the larger scheme of things. And yes, our iconography seems to increasingly lack an aspirational value. Maybe that is because there is so little to aspire to in a globalised world with an information overload, where most things seem attainable.
Democratisation of high culture, is one way of looking at it. Desublimation, another. The former seems somehow like a better thing and less angst ridden, wouldn't you say? :-)