To diverge from VoIP, an interesting situation will present itself in the future. Verizon is installing FTTH. Data offerings in their present service area are: 5, 15, and 30Mbps downstream. http://www22.verizon.com/fiosforhome/channels/fios/root/package.asp These speeds would support broadcast quality video delivery (even HD quality) if properly implemented.
I was walking down Tottenham Court Road at the weekend looking in the shop windows. More than one of them had a 1 terabyte hard drive on display made by LaCie. Combine that with multiMbps FTTH and P2P networks and you have a lot of big pipes running flat out 24x7. Back when MP3 filesharing was all the rage it didn't take long for the market to saturate, i.e. people had so many MP3s on their hard drive that there was no need to keep collecting. Imagine what happens when the same effect hits the film/DVD industry. --Michael Dillon