What the i2hub Lawsuits are About

So we speculated before on why the RIAA was going after i2hub users in particular.  Cary Sherman published this piece in the Pittburgh Post-Gazette.  Here’s a snippet:

“And while the music industry can sue to help arrest the growth of
this illegal activity, the universities themselves can be the most
powerful leaders in curbing theft of copyright materials on campus.

Through filtering and other technical means, universities can prevent
this mass piracy. Proactively, they can partner with legal music
services to offer students legitimate music downloads — as have 44
other universities (including Penn State).”

And if universities should filter, why not all ISPs?