From a telecom newsletter:
The Distributed Computing Industry Association and Level 3 share Netflix's concerns over ISPs that exclude from data caps traffic not sent on the public Internet, such as streaming video to Xbox 360 videogame consoles. The association for cloud-computing providers and Level 3, which speeds delivery of content including Netflix to broadband subscribers of companies like Comcast, were the only two entities in the Internet content realm to tell us they take issue with exceptions to data caps.
Amazon continues to want "vigilance" from lawmakers and the FCC over such arrangements, it said. Netflix had been the only company to criticize AT&T, Comcast and Time Warner Cable for not subjecting to monthly usage limits some of their own content when it's not delivered to broadband customers on websites but by apps or consumer electronics.
Level 3 backs "Netflix and other Internet content providers in their efforts to assure that individuals continue to have full and open access to all of the Internet content they want to see, hear and use," said Chief Legal Officer John Ryan. "We hope that Comcast shares that objective, and that it will take all actions to assure that its Internet subscribers have full use of the Internet without unnecessary or discriminatory rationing of Internet bandwidth." The telecom backbone provider had said Comcast was violating net neutrality rules in 2010 when the cable operator wanted Level 3 to pay to send to the ISPs' broadband subscribers
much more content than they sent to Level 3.
Amazon wants broadband subscribers to "pay for the bandwidth they use," a spokesman noted Vice President Paul Misener told the Senate Commerce Committee in an April 24 hearing. "Immutable or unrealistically priced data caps could hinder or prevent competitive products and services made possible by online video," Misener said then. "Consumer choice, without impairment, must be preserved."