The vast majority take out loans, so there's no reason wealthier families should be exempt from this "requirement". Stanford does the same for undergrad -- free for students with HHI <$250k/yr. It's perfectly reasonable.
Lots of highly ranked schools and Ivy's have similar policies. It's often cheaper for a middle class family to have their kid go to an Ivy for essentially free than it is to deal with tuition for a state school, even with grants and scholarships and such.
I'd have to look at their financial aid calculator, but I suspect a high income earning family could just reduce their income a bit and qualify for vastly more aid.
There is no 100.000% perfect solution, but a 99.9995% one isn't terrible.
Do you just find 65k even though your family had a massive reduction in income.
I don't like the financial aid system in general, it's really bad for young adults with rough backgrounds. Not everyone has a good relationship with their parents.
Having gone through the community college and state university system, it wasn't that uncommon to hear students say "my parents make too much for me to get aid, but they don't contribute to my schooling" when discussing financial stuff.