The pop radio audience has always been white/white female driven.
Carole King, Barbara Streisand, Madonna, Celine Dion, Alanis Morissette were products
of pop radio.
Young white males had rock/AOR radio to hear Van Halen, Springsteen, U2, REM, Green Day.
We had r&b radio from the 1940s up until the early 2000s which gave black artists a great foundation to "crossover"
from, to the white pop mainstream for additional exposure and sales. Luther Vandross, Freddie Jackson,
Frankie Beverly could sell millions without having to get played on pop radio.
Radio consolidation and the rise of Hip Hop/Rap radio in the late 1990s to the 2000s suffocated
r&b radio and r&b love.romance culture, essentially killing black r&b as a leading genre.
The success of rap in the 2000s, especially as it has become more drug trade and sex/stripper-oriented (no
more "One Love" by Whodini or "I Need Love" by LL Cool J), has led to the mass abandonment of black
r&b.
So, white pop iHeart Radio and its mostly white female demographic became the remaining destination
for youth-performed, popular r&b music, except it has to cater to the tastes of its audience (white young females).