[shuzchen]

That's not an analogous situation. When you buy a Honda Fit, you selected it specifically at the dealership (down to choosing the color and possibly extra add-ons like GPS, smart-key, etc), agreed on a sum of money to exchange and then took ownership of it and drove it home. When you listen to a song on Pandora, it's likely that you've never heard of that song (or even the artist) before. Combine this with the feature that lets you purchase the song (or album it came from), and it's not a far stretch to view of plays on Pandora as advertisement to the benefit of the artists.