No one but teenagers with undersized brains listens to "singles" type music, and whites have the numbers and the money, so singles charts are supposed to reflect that.
Not necessarily! Having read music bloggers from the anglosphere (in case the same does not apply to Germany), the relative cheapness of singles along with a music press willing to hype has yielded great things. It was through singles that punk, hip-hop and rave first breached mainstream consciousness, such that I can remember. More mundane is the idea of music "saving lives," which sure does happen.
Yes, there was a time when things were (somewhat) different.
Although not in the case of rave.