Actually, its probably one of the reasons why black female music artists are no longer selling to non-black audiences.
Diana Ross, Donna Summer, Aretha, Roberta Flack, Tina Turner, Tracy Chapman and Whitney sold millions to non-black audiences. No accusations of "appropriation" back then like today. People generally bought what they liked without accusations.
And since there is no realistic way to regulate appropriation, the iHeart white and Hispanic girls that now buy the majority of pop music can get their r&b from Ariana Grande, Alessia Cara and Selena Gomez without any appropriation "guilt" attached.
Black males don't make the same accusations, so our music hasn't been impacted the same way, so Future, Kendrick and Childish Gambino can still win with a pop audience.