Many ISPs do have peering agreements with Netflix[1] and the like. So they may be they are able to shape the traffic that way as well. All your Netflix traffic

Many ISPs do have peering agreements with Netflix[1] and the like. So they may be they are able to shape the traffic that way as well. All your Netflix traffic is going through that connection, so even if its not on Netflix side your ISP knows to throttle to the bandwidth that will get the resolution they want you to have. [1] https://openconnect.netflix.com/en/ https://openconnect.netflix.com/en/