The problem is that most companies aren't going to tell you that their peering circuits are running hot or that their internal network or access layers to the end user are running warm at peak. ISPs all do stat muxing and the line is "we make money when customers don't use the service".

They'll be happy to deal with the last mile segment, but anything beyond that is murky and most companies I know aren't going to share much. Helps to have friends on the inside leak some graphs, though.