You've effectively just said "there's more of us than there are of them, so why in hell should we care about what they want?"
And that, right there, is the very essence of racism.
I disagree very much with this when it comes to entertainment content. If we're talking about the ability to find employment or other "real things", then you are very right, but for an item like a game that only exists purely for entertainment that has no meaning at all. I still very much value an individual who wants to give good entertainment to minorities, but not someone who is demanding that others should do the same. Saying that there's a "right way" to handle content in entertainment gives me a very bad feeling.
Also, purely for quality purposes, movies/stories/games/whatever that appeal to us usually do because someone put their heart and soul into it. Doing that only works if you create exactly what appeals to you, employing what you know, and targeting people who feel the same.. if everything is modified to fit into some set rules for content, that severely impacts people's ability to express themselves.
If that set of rules is systematically applied industry-wide that would be a much worse problem, and exactly the same problem as any other discrimination (and now real, as it applies to real people's freedom to express themselves, and not just content for consumption as entertainment).
The only thing of real importance is liberty for people to create what they want in a free and peaceful society, be they majority or minority. Forcing some specific goods to fit a certain group in society has no meaning, only that group's freedom to live and create what they want themselves.
If there is a problem it's only with diverse people's ability to follow their dreams to create games, and nothing else.
It's also important to remember that becoming popular or rich or famous is not part of a reasonable expectation or privilege, but something 1% of us may perhaps sometimes achieve with a lot of luck stacked on top of a lot of hard work. We don't somehow "deserve" to have $100 million toys matching our expectations, and if we really want a game where the characters look a certain way I'm sure there are a few games to be found matching most of them if we limit our expectations just a little bit.