reply to prairiesky
Re: Cable has to recoup costs of lost TV subscribers Your making it sound like AT&T didn't have aforementioned infrastructure in place.
There is no installation cost because the phone lines have been in place for normal phone service since initial install. That is $567,000 you can deduct right there.
There is no infrastructure cost other than maintaining lines that are already in place. You already did the math for that, so there is still a $13.20 profit NOT COUNTING the additional revenue from land-line phone service that comes over the SAME wires. Therefore MAINTENANCE COST is SHARED between DSL and phone service because the SAME lines have to be maintained, all the way to the CO.
So yes, it is still looking profitable.