Enclosed with my cable bill was an ad for Comcast's "Service Protection Plan". Comcast's policy is apparently to charge for "wire-related service calls". The ad says the following:
"For a low monthly fee of $3.30, you'll be covered for all inside wire-related service calls. Without the plan, regular service call charges will apply. Current service call charges are $22.25 for a video-only service call and $32.25 for a High-Speed Internet or Digital Voice service call."
So this is only a good buy if I expect to have a service call every 22.25/3.30 = 6.74 months (if I'm a video-only customer) or 32.25/3.30 = 9.77 months (if I only have Internet and/or digital voice through them and don't have their television service, which I suspect is quite rare); for those people who might incur both kinds of charges, the relevant quantity is somewhere in between.
In any case, nobody's wiring is that bad, is it, that it needs fixing more than once a year? And if it is, don't you have bigger things to worry about than your cable TV? Comcast is probably making huge piles of money off of this.
You might say that the reason for a customer to buy this is for "insurance", and that my expected value calculation is sort of silly because you're not protecting against the average but against the unusual. And that would be a valid point if, say, they were offering "for a low monthly fee of $330, you'll be covered for charges which are usually $2225 or $3225". These numbers are in the right ballpark for, say, car insurance. But I would hope that people have the good sense to save enough money that an unexpected expense of $22.25 isn't going to hurt them.
(The fine print says that this isn't available to "customers in a residential building with multiple apartments", which describes me.)