It's hard for customers to buy that when the YouTube and Netflix videos they're watching only need a few hundred Kbps, but they can't get one good stream going on an otherwise unutilized connection. It's not a capacity crunch near the edges of Comcast's network, where lines are still shared in neighborhoods and upgrades cost the most; it's just greed, fattening already healthy profit margins by refusing to increase peering capacity and demanding peers pay more for bits customers are already paying for.