Phone tones make more profit

I was going to post on this after hearing it on the radio last night but The Shifted Librarian beat me to it. Apparently the money spent on ringtones is substantially greater than the money spent on cd singles. If thats the case, how come so many people have that annoying “nokia” ring tone that is mocked by that guy shouting “HELLO! – YEAH I’M ON THE TRAIN” in the advert/comic sketch. (oh and I wasn’t listening to Radio2 – I’ve a long way to go till I get that far.)