To be fair, I wouldn't pin the blame on YC. Few people go to Ivy League universities to ponder ethics or philosophy. These schools are widely seen - by students and by parents - as an incredibly expensive way to "10x" your earning potential and influence. They were producing Mark Zuckerbergs for a good while.

Yes, they accept some number of gifted people from underprivileged backgrounds, but these people are not the ones defining the school's culture. For most people, success at Harvard is to become a politician or to get very rich (or both).