Writing in the Wall Street Journal, Andy Kessler says that Peer-to-Peer is the foundation of the emerging threat:
The real dark cloud is technology known as peer-to-peer (P2P) bubbling up from the underground that leverages this architecture. Here's how it works: I might have a copy of this week's "American Idol" on my hard drive. You want a copy, you stream it from my PC, not FOX. Then you share it with five or six people that are close to you geographically so it gets to them quickly. They share as well, and on and on. Live video streams like a virus, which means once started you can't stop it....
BitTorrent and eDonkey are the top P2P networks and half the usage is for TV shows. P2P hogs something like 35% or more of all Internet traffic. Thirty-five percent! But to replace cable, it has to be real time, and there are tons of real time P2P players, especially out of China: TVU, SopCast, PPMate. As I write this, I'm watching ESPN on my PC, denying Disney another outrageous $2.30 per month they charge me via Comcast. Just as the iPod opened up stolen music to the masses, devices like Apple TV mean I can stream to my wide screen. Is this Napster redux? It might well be. TV is no longer the safe cuddly business it once was.