A while back, the Economist said, "a dumb rich kid has a much better chance at attending an elite school than a brilliant poor kid." If a university is to maintain the goal of admitting smart students, then this would be a step toward that.
Saying that the goal of a university is to pay the bills is saying nothing; everyone needs to pay the bills. That's not a goal, it's a means.
Bridging the gap between brilliant students and expensive education is why colleges and universities have endowments, and high sticker prices in the first place. The richest students overpay so the university can bring in smart students who aren't rich.