"U.S. Mobile Screensavers, Icons, and Wallpapers Forecast, 2002-2007: Graphics to Go " - IDC study.

WHY? I know there are a few techie guys who might be interested in this but.... why?
Why dont they conduct a study on the number of ring tones market, casings market, sms jokes market, sms rumours market, sms intensity of vibration market (alternate uses) .....