Comment Yes it is a peering problem ... (Score 4, Informative) 243
and not a net neutrality issue thankfully.
Settlement free peering between tier 1 carriers only happens when the flow of traffic is roughly balanced between the contracting peers.
When one peer is pushing a lot more traffic onto the other network, then that usually goes out the window and the pusher is required to pay the receiving network. Otherwise, networks would be monetarily incentivized to unload traffic they should carry on their own networks onto their peers' instead.
Settlement free peering between tier 1 carriers only happens when the flow of traffic is roughly balanced between the contracting peers.
When one peer is pushing a lot more traffic onto the other network, then that usually goes out the window and the pusher is required to pay the receiving network. Otherwise, networks would be monetarily incentivized to unload traffic they should carry on their own networks onto their peers' instead.