The more wealthy universities should stop charging tuition at this point.
PS, the Ivies pretty much now charge based on ability to pay. These huge endowments mean that they are able to admit students based on criteria other than ability to pay and let the wealthy students subsidize the poor ones. If you are poor, going to an Ivy is generally cheaper than going to a state school. And they do alway ssay that it is their huge endowments that allow them to do that.
So you could look at the decline in giving as a decision by those who went to the Ivies at a time when they were mostly reserved for the wealthy, not wanting to create a more egalitarian school (I think that's utter rubbish, but it makes about as much sense as the "generation snowflake" thing).
But at the next tier down, where schools are still expensive and the endowments are modest, kids will graduate with crushing debt. I've known a few people of very modest means who finished their Ivy League educations debt free. I can't say the same thing of kids with modest means going to state schools.
See
https://college.harvard.edu/financial-aid/how-aid-works/fact-sheetThe Basics
*Close to 60% of our undergraduates receive Harvard Scholarship.
*20% of our parents have total incomes less than $65,000 and are not expected to contribute.
*Families with incomes between $65,000 and $150,000 will contribute from 0-10% of their income, and those with incomes above $150,000 will be asked to pay proportionately more than 10%, based on their individual circumstances. Families at all income levels who have significant assets will continue to pay more than those in less fortunate circumstances.
*Two-thirds of students work during the academic year.
Ninety percent of American families would pay the same or less to send their children to Harvard as they would a state school.