I don't believe that's ironic. Harvard and other "elite institutions" are the places with massive endowments, not state colleges or anything. Frankly the more I think about it the more it's nothing particularly interesting, just a fractal representation of the privilege of wealth as far as you want to drill down.
Not entirely... U Mich's is ~$20 billion, UVA & OSU are both around $8 billion, UCLA's is ~$5 billion, the Texas + Texas A&M system have nearly $50 billion in AUM.
Lost in the commotion is the chaos that NIL is wreaking on universities and their donation funnels. The donations side of things seems to be rapidly drying up as a revenue source.