This is an interesting post. Without getting into the extreme side of things, I really do think that as more and more white men get involved in cuckolding, naturally their wifes will crave more and more BBC, as will the husbands want their wifes to take more BBC. This is, I feel, a natural progression as has been the case with me.
Men will eventually only be able to get hard watching IR and nothing else will excite them and enable them to get hard. This is the start of a cycle where white men stop or are stopped from fucking their wifes.
I am talking from experience here.
White men are still needed of course - how else are we going to replace the next generations of white women? so we will always be good for something i expect.
Just my brief opinions and thoughts even though i do appreciate they are not for everybody