Then why don't non-white people move in to SF, just like in Detroit? Alright, enough with the wisecracks. The people moving in during gentrification are rich

Then why don't non-white people move in to SF, just like in Detroit? Alright, enough with the wisecracks. The people moving in during gentrification are rich or rather richer than the current residents. Just because the overwhelming majority happen to be white is a mere coincidence arising of multiple factors. These people are not really white/black/brown, their only true color is Green, like the dollar bills in their banks and pockets. The color of their skin is secondary. With all the song and dance about loss of diversity, in any city or context, I see it as a green-ification, not a white-wash or any other racially motivated term. This is a class issue that is always conflated as a race issue, with the the same lame excuse: because, history.