There's so much spin and misinformation in above post.
It's not as simple as "data transfer" where peering agreements are involved. The fees you pay aren't there to allow Cogent to dump tons of data on one link of your ISP, forcing them to carry it on their backbone across the country to the end user there, rather than upgrading their own backbone to handle the traffic properly.
No, the fees you pay are for your ISP to provide a service, i.e. the transmission and delivery of digital content you choose over their network. And if you request Netflix to stream movies to you, your ISP by golly is contractually obliged to deliver that data to you . When Netflix/Cogent sends that data which you requested to your ISP, calling that transmission "dumping" is clearly 1. untrue and 2. BS.
That's exactly what they're doing. As Cogent dumps more traffic on them, they're just not upgrading the peering points, so Cogent customers see congestion and slowdowns going to/from other ISPs.
Not only Cogent customers. The customers of that ISP will also notice the slowdown . Take Verizon for instance. When/if Verizon refuses to upgrade peering points, all of Verizon's paying customers who use Netflix will be affected. So, what do you call failing to deliver a paid for service to your own customers?
Stop taking the ISP's side and look at the average consumer's point of view for once.