Earlier quoted context omitted.
Comcast has as few peerings as they can legally get away with. Redundancy isn't high on their list of things to care about, apparently.
> ... as they can legally get away with. Can you clarify a bit? I'm not sure what you mean. An ISP isn't, by law, required to peer with anyone.
If they didn't peer with anyone they'd be a closed network and it would be illegal to advertise that as "internet access".
They're legally required to live up to the claims of their product. If they say X Mbit/s then there needs to be at least a plausible case made that they can achieve those results. Anything significantly less is to invite a class-action lawsuit.