They are still there. There just aren't enough openings for them in the commercial music industry because, and don't ask me why, our society demands hip hop, the whole hip hop, and nothing but the damn hip hop, so help us God... At least in the US anyway.
I think in 2007 there was a number one album released. I can't remember if it was number one in sales for the whole year, or what, but it was the first time in ten years it wasn't a rap album. Maybe things are turning around.
Not all rap is useless mind you, but it's being churned out to the masses at such a rate as to have become useless.