I agree with your concern, but the problem is that Harvard will have to choose somehow, and most other ways of choosing are even more biased toward rich parents

I agree with your concern, but the problem is that Harvard will have to choose somehow, and most other ways of choosing are even more biased toward rich parents: some high school kids are writing conference papers and starting a venture, just imagine what kind of social background would make these kids even consider such an opportunity. I don't know if there's any good answer.