...which is exactly what I said - the early high school crowd that is at that stage in between listening to teeny bop N'Sync stuff and and powder punk.
They also make the lion's share of music consumers (blowing $15-a-pop for a CD of their parents' hard earned money). So, no, rap is not narrowly listened to.
What percentage of the population is made up of white teenagers? If it is more substantial than I have speculated then you are right. If it is still a small minority of the population, then you are wrong. Music consumption happens in more ways than buying CDs or using napster, you know.