The difficulty is in separating what is an unfair advantage be it legacy or child of prominent parents from the kid’s own achievements. Kids that get into a top prep school have a better shot at a super elite college because they have already been found to have the ability to achieve at a high level. It is unfair to assume that all kids of politicians are only capable of achieving the infamous “gentleman’s C” and are not in and of themselves high achievers. Genetics being a strong factor, it seems likely that high achieving, smart politicians (or CEOs or graduates of super elite colleges) will have a higher percentage of kids with those same traits. Unless you actually see the kid’s application, there is no way to know if they are being given an unfair advantage. Of course they have lots of privilege in the form of great schools, tutors if needed, opportunities to pursue ECs at high levels regardless of cost, etc. to craft a great application. That is obviously a huge advantage. But the student still has to participate in the activities, take the tests (and hopefully write their own papers).