It has nothing to do with P2P being evil. P2P does also use up significant amounts of bandwidth compared to competing services. Spotify is both insecure and tracks it's users. There is no place for such a thing on government networks.
The article says nothing of it, nor is there any "admission". Creative headlining strikes again.
What the author illustrates is simply that it is easier for cable to (rightly) blame the content owners for the lack of ala-carte, than for them to take the risk and refuse to force the entire customer base to pay for them.
The "math" of ala-carte works just fine. It just doesn't work the way consumers, bloggers, or industry fantasizes.