> If some peer is causing massive contention issues for your network
But generally it's not "some peer" causing the problem. It's the fact that you have a million clients that all want something from that peer, and that peer is supplying it to them. And those customers are _each_ paying you to be able to get it from that peer. So you don't have a problem with "some peer" taking up N bandwidth, you have a problem with 1 million clients each taking up <N / 1 million> bandwidth; which you sold to them.
If you have a problem with your million customers using up the bandwidth you have, then cap your bandwidth at the max amount you can support and/or raise the amount of bandwidth you have available.
But generally it's not "some peer" causing the problem. It's the fact that you have a million clients that all want something from that peer, and that peer is supplying it to them. And those customers are _each_ paying you to be able to get it from that peer. So you don't have a problem with "some peer" taking up N bandwidth, you have a problem with 1 million clients each taking up <N / 1 million> bandwidth; which you sold to them.
If you have a problem with your million customers using up the bandwidth you have, then cap your bandwidth at the max amount you can support and/or raise the amount of bandwidth you have available.