It's right there in my last post. Ivy League universities are not a public resource. Also, a tragedy of the commons is a tragedy of the commons, and you are being really disingenuous trying to compare control on the inputs of an Ivy League university with eating a species into extinction.

They don't have to be public, they have to be shared.

I thought you had some interesting economic point to make about these kinds of situations. So instead let me make one of my own. Economics isn't physics, it's broadly applicable to any kind of situation you think to apply it to. Any time you have a situation where you'd want to say, "this is why we can't have nice things," you're looking at a tragedy of the commons.