You need to stop being judgey and supportive.
The reason why there aren't more blacks in tech is because of the resources they had while in school. We are at a turning point now where we will see more and more black technologists as funding in public school systems have increased over the years, but you have to remember that there are tons of white CEO's on panels that haven't coded a lick either. It's not a black/white thing. It's a how passionate and ready you are to build something.
If all the creatives and business people left tech, the consumer products sector and half of b2b would die.
If tech left, clearly, there would be just a bunch of people selling ideas.
It takes both parties and for the historically underserved communities there is a natural lack in leadership that is going to be 100% equal because minorities arrived at the party later due to socioeconomic conditions. Sometimes there's racism, but ask yourself if the problem is you and be honest.