I can't say, I can see both sides of the argument, there's pros and cons. As you mentioned rap's popularity has exploded worldwide but with that you get the miley cyrus, katy perry, iggy azaela, post malone, types who come in and only use the genre to make themselves rich or stay relevant. How much are black artists making off of collabs idk, but it's an aspect glossed over in these discussions no doubt. Like, how much did T.I. make off of iggy after taking her under his wing and then helping her blow up, had to have been a grip.
I think once something becomes so big it's impossible to keep the vultures and opportunists out, it's just something that you have to deal with and at profit from it as much as you can, that strike it while it's hot. Cus at the end of the day, it's a career and it's all about the money in one way or another.