Why should universities be under any more of an obligation to stop copyright infringement than any other ISP?

They should not. However, the RIAA goons latch onto them because of the uniqueness of their constituencies. Most ISPs have to compete to keep their users, this means they must make them happy or they jump ship. A college student can't just get angry and leave the university (especially if they are in a big university). Well, they could but "Darn it Harvard I am going to get my education somewhere else" also gets them a different product.

I would like to say that this will be the best thing ever to happen to geeks. Why? Well, when I was a kid bullys beat me up and stuff. God help the bully who would have tried to go techy on my ass!!! My children will grow up in a world where bullys get their websites DDOSed etc...
I can see it now (Bully site)"TImmy is gay"
E-Mail to Bully site I admin from Timmy "I own your website and I got your moms credit card. If you do not leave me alone I will buy lots of gay porn under your name with her card. Also, look at your site. Do you like that picture I think it does you justice and Elton John never looked so young...I really like the Gimp it works well. Would you like to call truce?