@cobsohn: I disagree that it is an "either or" situation. Increasing diversity brings multiple benefits simultaneously. Yes, it increases sources of revenue. Yet, for large media or consumer goods corporations that is not the only impetus for diversity in their ads. For less revenue focused businesses the other effects of diversity are felt largely among its employee base. Morale among employees increases when they feel integrated into the corporate structure, diversity at the top reflects down to the general workforce and therefore employees feel more invested in the company. I included sources that explain many of the benefits that come with the increased diversity. If you would like to learn more about the beneficial effects of a diversified workforce there are many peer-reviewed studies Google Scholar has for free and many websites have discussed this recently due to the increased focus on diversity.