I'm sure that at some point, ISP's will be required to make certain improvements to prevent, limit, or at least spy on the traffic flowing. I mean p2p is just one example. Spamming, port scanning, and god knows how many other examples could be used.
Politicians cant write laws without defining the rights and restrictions, and of course the responsibilities of the ISP's (cause after all, its their gateway that divides between you and the rest of the world).
Since nobody "owns" the internet, its kinda difficult to pin point responsibility. I mean even your ISP is nothing more than a P2P connection with a local loop and router connecting themselves and their clients to a another router (another ISP) that connects the same way down the line via BGP.
It will be interesting to see what happens over the next decade. While I personally believe the internet should be a FREE WAY (like the autobon of Germany) I hope the bureaucrats wont screw it all up for us.