University of Pennsylvania is offering a fully online undergraduate degree program.

[ss20ts]

This existed since years ago.
However, their tuition fee is NOT cheap! Thy charge $1200 per credit. So even if you manage to transfer 90 credits, you'll be charged at least $36,000+ for a liberal arts degree.
If you fail to transfer the 90 credits, the price will be abnormally high.
It costs $144,000 for the full 120 credits. I don't think many people will be able to pay that much price for an online degree.

If someone gave you $144K on the condition that you use it solely for your higher education I think that most people would spend it elsewhere.  I think that you could get a pretty good degree for a quarter of that amount.

I'd go to Cornell in a heartbeat. Penn State is also Ivy League, but there's just something about Cornell. Heck if $144K covered Harvard and I could get in, why not? 

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I'm not talking about the Harvards of the world.

. . . you do know which thread you're in, correct?

Yes I do. I was speaking about endowments in general. There's far more to higher education than the 8 Ivy League schools. Pretty much every private school has an endowment.