You are a little blind-sighted. Your kid is judged against

fellow ABCs, not the black kids.

The fact that he is not accepted by any ivies says that there are a lot more qualified ABCs than your child.

The black kid didn't take your kid's place, but other ABCs did.

The ivies need to admit a pool of black kids, because they stand out in their peer groups and they will be the leaders for black people.

Will your kid become a leader of American American groups/communities? Hardly, no matter how outstanding he is as a person.

That's not math, that's not science, that's just human nature and reality.