Mind you, it wasn't approaching $80K per year, but inflation-adjusted was still pretty expensive. But they weren't very generous with the "need" side of things. They tended to give just enough to make it possible for a student to attend, if they qualified from a household income standpoint. This was based on the idea that it was a special opportunity to attend N.D., and that there should be some level of "sacrifice" for everyone who sent their kids there.
One can agree or disagree on that, but I think part of the motivation was so that we didn't have people lined up to attend simply based on low-cost priority. I can somewhat understand.