ISPs can do whatever they want, but I will vote with my wallet. If they do anything to limit my bandwidth or IPs, I will simply switch ISPs.

Believe it or not, this is what many service providers would like you to do. If you’re the kind of person who wants to eat $200 of steak all week long at the $5.95 buffet, we’d gladly help you go patronize someone else.

I’m the senior network engineer for a regional broadband operator. We were first to activate service in our region and had many heavy-use customers sign up along with the rest. Because we rate-limit P2P (as clearly explained in the service agreement and website FAQ), we saw about 8% to 10% of our customer base leave when the incumbant local exchange provider (ILEC) finally activated DSL.

I always found it amusing to see the ILEC do their dog and pony show when they had zero customers on the local DSL network. They’d feed the community with either a fractional T1 or at best, two T1’s bonded. The speeds in their little demo trailer were impressive at first.

Then the P2P abusers would switch. Three months later, you’d see peak hour speeds of around 60 to 110 kbps - instant ISDN! Then we’d start getting calls from the abusers telling us we could have their business back ($35-$40 a month), but ONLY if we opened up P2P. The reality was our rate-limited P2P was ultimately faster than the unpoliced nasty DSL network that died when a handful of P2P servers lit up and consumed most of the bandwidth.

I’ve seen some pretty hilarious emails passed on from customer service, from the threats to file a class action lawsuit because we wouldn’t permit unrestricted P2P (from people that had left us to go to a DSL network that was a disaster), to explanations that a customer’s request should never be ignored if we are a good company. We’ll even get the occasional Better Business Bureau complaint because we rate-limit. I’ve even seen explanations that we should charge everyone more money to subsidize the few abusers - apparently nobody wants to use their own money to pay for their P2P habit.

The funny thing is that we have a standard response that provides these customers with a connection that doesn’t have the rate-limiting for about $200 per Mbps, with a guaranteed SLA. When you’re delivering this to rural communities, $200/Mbps is pretty incredible and it’s darn near our cost to get it there. Yet we never have takers on it - P2P hogs expect to dine for close to free.

Ultimately you have a choice: you can please 85% of your customers with well engineered traffic, and send the 10% abusers and 5% financial deadbeats to the competition, or you can please the losers and send away the good customers. If you want to stay in business, you know what the right decision is.