>>1977Rock was kind of "whitened" or assimilated or whatever in a different time - hip hop actually wasn't the first popular genre to
stay black in terms of how it was perceived culturally, it essentially happened with funk, too. There were white funk musicians, of course, but the vanguard of the funk genre was always mostly black - Parliament/Funkadelic, Sly and the Family Stone, James Brown, etc. Early funk rock (including 2 of the aforementioned bands) was also the only strand of rock which was still primarily black in the 1970s, when rock'n'roll and its offshoots had otherwise largely become "white" before 1962. Before funk, soul/r'n'b had also
stayed black, but kinda to a lesser extent - there was still blue eyed soul, doo wop, British r&b, etc. where there were white stars who were just as big.
I put it down to a cultural shift after the 1970s, but, admittedly, it is kind of weird that, after all this time and all these white rappers, genuinely impressive ones are still kinda scarce. There are lots of great, talented white funk musicians, but somehow with hip hop there seem to be fewer per capita wypipo who are good at it. Then again, I barely listen to rap.