Well, I don't think we should be focused on blocking other content, because now we're running up against network neutrality in our common carriage roles.
My point is that if we were going to look at illegal content, we would be talking about terrorism content. You know, there are bad things out there.
We carry the bits, and we do that because we're common carriers. We carry the bits without looking at them. Just as you can pick up the phone and speak to another person and say whatever you want on that phone line and that phone company won't cut off your call because of the words that you say, we will carry the bits.
I think the large ISPs are preoccupied with copyright in particular, and website blocking to enforce copyright, because of their interests on their media sides.