That's a couple of hundred megabytes of flow that they can no longer bill to those customers. I'd ALWAYS rather have my customers use our network for transit than have them peer directly with my peers and bypass the toll booth.
What an ideal carrot to ensure that we operators plan our networks well, if we do - we keep our customers. If we don't our customers find alternative means to provide what we are supposed too, and one way or another thats going to cost you. Personally speaking, I'm a little worred that this isn't the last C+W peering issue that we will hear about in the near future, unless of the new flows of customers abandoning them changes a few minds at corporate HQ, I've certainly heard from a large European C+W customer who is now seriously thinking about finding alternatives because of this action. Also, I couldn't recommend buying connectivity from any organisation who randomly disconnects people without consultation/communication to their customer base, and operates draconian and stupid peering policies. Regards, Neil.