P2P is a new hot technology for businesses who are realizing it's benefits. As, always, anything the authorities can do to shut it down is soon matched by very smart and determined people who have access to the dame technology. You can start blocking protocols and such but you end up shutting down too many legitimate users as well. It's also about more than piracy and commerce. There are countries where the internet is the only free medium of speech available. Newspapers, radio and television are rigidly controlled by the state. Even groups of people meeting can be banned. These days, government and big corporations seeking to curry government favor are a real concern as media power becomes increasingly centralized in a few hands. The internet is definitely anarchy and there are negatives associated with that. At the same time, I prefer that to Big Brother having his finger on all the buttons.

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken