I should also point out that Nu metal got its first real kick with korn.I'm not sure of the timeline but I think around 95 they(the music "industry")realized there was a "market" to be had,and so began the onslaught of "marketed metal".That wasnt the first(and unfortunatley wont be the last)time music had been a "product".It was simply the realization of a sound with amazing profits.