Comcast fights back against Netflix’s poor viewability claims - CNET

"Comcast is limiting the capacity of connections between its network and other networks, unless the network agrees to pay Comcast for access," Libertelli wrote. "Prior to our agreement to interconnect directly with Comcast, Netflix purchased all available transit capacity into Comcast's networks from multiple transit providers. Every single one of those transit links to Comcast was congested (even though the transit providers requested extra capacity), resulting in poor video quality for our members."