I don't think that's the point, though. ISPs wanted to charge businesses extra fees for high bandwidth use and they were backhanded to the face. Now Google would like control of high bandwidth use (well, their response vaguely says "any kind of server") in a similar fashion. I think semi-arbitrary rules to distinguish business from consumer usage is a red herring. It ultimately comes down to, can a business charge extra for varying levels of bandwidth usage or not? Google said no when it wasn't an ISP, and now it's saying yes.