@Foxfyre,
If
nobody watched commercials, I imagine advertisers wouldn't get anything out of it. However the number of people who watch and make decisions based on commercials is
far from zero.
Some studies show that commercials work (although, to a lesser degree) even when people fast forward them.
Heck, I know I've bought things as a result of commercials. I've seen a Wendys commercial before and gone "Mmmm, I haven't had wendys in a long time". Or "Wow, the italian chicken is back at burger king! I know where I'm going for lunch..." I can't think of any non-food examples, for me personally though.