They are seen as having more disposable income. In an ideal world that would be great to be colorblind, but the power structure of a lot of these businesses have not embraced that in the least. They want colorblindness when its convient. When it comes to doing business they have different rates for Black and white audiences. That's the bottom line.
Record companies divide the music up along ethinc lines.
Again this is all done in the name of doing good business and target marketing. The reality is that there are different budgets set for each department. Pop gets much more then urban. Quite often entire Black departments are erased from record companies. That is never the case with pop.