A lot of ISPs were saying something much stupider, which was "the data flows are unbalanced, so pay us to peer".
1) The data is all at the request of the ISP side, and 2) What so you'll peer for free if Netflix changes their software to upload 5Mbps of null bytes while open?
The ISPs were saying "You are benefiting from our networks for free! Pay us!".
The companies like Netflix were saying "Without our services nobody would want broadband. Maybe you should pay us!".