"While the actual cost of supplying their services goes down"
On what planet does the article author live? The cost to provide TV is increasing far faster than the rate of inflation, because networks keep asking more for their channels every year. In just over 2 years the local channels (which are broken out on my cable bill) have gone from under $8 a month to over $15 a month. ESPN's channels are nearly $10 a month now, they were half that 5 or 6 years ago.
The cost of providing internet may be going down, but that is in no way shape or form true for providing TV. Anyone claiming otherwise has zero clue what the hell they're talking about.
Not defending Comcast here, if they offer "lifetime" price lock that's on them to provide it even if they make less money on it every year. They should be forced to continue offering him that price for as long as they offer TV & internet service in his market.
Biting the hand that feeds IT
