We had an attorney from MTV Networks come and speak at my office last year. He said everywhere he goes, when it comes out he works for MTV, people jump down his throat.. "WHERE'S THE MUSIC VIDEOS?!?!" His answer was simply that kids (to whom videos are predominantly marketed) are no longer willing to wait for their favorite video to come up on a TV show... Instead they get the videos on-demand from YouTube or Yahoo Music and stream it to whatever they want to watch it on.
Plus, music video budgets are WAY down since the music industry is hardly profitable anymore... The first thing to get cut was video budgets... So it doesn't make for compelling TV like it did in the 90's.
Not saying I agree... Just saying that was the case he made.
Makes sense. Why load a station with music videos.....no one is going to sit through endless commercials and other music videos just to wait for the one video they really want to see. Not when they can pull the music video on the internet instantly.