Musical sellouts in advertising

What the devil is going on in advertising these days?!? I've been seeing some of the most unusual combinations of products and music in commercials lately. The two most glaring examples are Cadillac using Led Zeppelin's Rock & Roll and the B-52s' Roam hawking Clarinex of all things. (Granted - this was from their album Cosmic Thing, which was hardly as cutting-edge-out-of-the-mainstream-and-loving-it as their older stuff -- but still, it's the B-52s!) It should be noted, also, that Clarinex previously used the Overture from The Who's rock opera, Tommy.

Next thing you know we'll have Peter Gabriel singing Games Without Frontiers to sell Parker Brothers stuff.