No reason why it shouldn't be true. Comcast wants to get people to pay for access to its customers. Since it can't demand outright, it lets its standard access go to Hell -- at least enough to drive content providers to use paid colocation/CDNs. Entirely predictable, solidly anticompetitive, and an excellent way to extract monopoly rents.
Ah, the market at work. The outcomes may suck from any individual perspective, but they are surprisingly and refreshingly predictable. Like actuary tables. Mind you, the full extent of the externalities can be hard to project. But that's life.