People care more about what Lily Allen wears than her music. If the music industry now was not governed so much by making safe choices and signing artists making muzak, and mechanically squeezing every last nuance of individuality out of the musician then people would buy the product.
Gentle Giant were signed to Columbia in the 1970s and looked like this:

Do you think this band had a stylist? Do you think the managment in Columbia dragged them in and told them their sales were down 0.1% this week so they should play more power ballads? Hell No! Were they granted artistic freedom and therefore are still respected (albeit with a cult following) as highly tallented multi-instrumentalists? Hells yes.
That was the 1970s. With a few exceptions (Mars Volta, Coheed and Cambria, Porcupine Tree and other established progish bands) here is the face of music circa 2009.
Brokencyde are a "crunkcore" band, fusing hiphop and screamo and look like this:

Dare I say musical integrity has taken a back seat to visual appearance?
Here is some of their music.
This music has no staying power. It will not be remembered this time next year, let alone in decades time. Is it worth paying money for? Hell no. It is mixed to sound loud and noticable, even on small Ipod headphones and has no dynamics or actual musicality. This is were commercial music is heading, a disposable noise that could be by anybody with a record contract today.