Regardless of historical efficacy or accuracy, an inaccurate statement is still an inaccurate statement. The goal on this board, in my opinion, is debate and (for some) intellectual advancement.
Saying white culture has nothing to offer to American consumers is true from a certain viewpoint, but I don't believe he had the same perspective as I do.
At face value, what we call "black" culture in the media today has much more to offer to the average consumer, simply because it is more broad-based, more generalized, and often more simplistic. I use quotation marks because what we get as consumer in America is a very stereotyped, de-souled, and unflattering view of black cultural contributions to society.
The same could be said for what is called "white" culture. Laguna Beach, "Friends", whining emo bands, etc. are what advertising execs believe is a broad-based appeal to whites, and also to society in general; or at least the parts of society who are not too distant from "white people" in viewpoint or taste.
Unfortunately, though, both representations fall very flat compared to the range of culutural and social value which lie underpinned in "white" and "black" culture. Valuable contributions will always be subverted because of the status quo, the American corporate epistemology of profitability, and an attack on innovation, creation, and advancement in our society.