I'll dispute whether you can throttle anything by breaking a connection and replacing it with nothing. A much wiser choice on their part would have been to simply mimick what a congested network would do and start randomly throwing away packets.
Once again, congestion is not a new problem, and the Internet is already built to handle it. There is nobody running around in a suit and tie visiting buyers with the advice of "don't buy anything -- there are at least 10 RFCs with the 'Internet Standard' label already explaining how to handle networking congestion."
The problem is that Sandvine perfected a method of performing TCP packet forgery, which was an awesome feat -- but worth little unless they could sell it. So, using P2P as a bogeyman, they convinced buyers that they had a new problem and that their solution was the solution.
Well, it wasn't a new problem.
Back in the early 1990s (and this time, I do have the decade correct), file transfers took up roughly the same percentages (40%-60%) of bandwidth use as it does now. User behavior hasn't changed, only the protocol has. Back then, the preeminent method was FTP. These days, its P2P.
The lesson: You can't throttle progress, nor should you try.--
Robb Topolski -= funchords.com =- Hillsboro, Oregon
"We don't throttle any traffic," -Charlie Douglas, Comcast spokesman, on this report.