said by Corydon :

I would imagine that Digital, HSI and VoIP are much more profitable areas; Comcast would probably rather have all of their subs on digital tiers and none on analog. As long as those are growing, they'll be fine.

Edit: I note that Comcast's share price is up about a dollar on the news, so investors don't seem too worried either.

said by Corydon :

It does lead to an interesting question: is it better to have fewer customers with a fatter profit margin or more customers with a leaner one?

I'd guess that, from a customer service standpoint at least, the former is the better scenario (assuming everything else is equal—staffing, resources, capex, etc.)

said by TKJunkMail :

Comcast keeps losing basic video subscribers.
...
But the continual loss of basic video subscribers is a trend that will eventually cost them down the road as they have fewer and fewer cable connected customers.

said by MrMoody :

Yes. And why are they losing subscribers? Competition from FiOS and UVerse? Puhleeze, they're still a drop in the bucket and DirecTV/Dish have been around as video competitors for ages.

I think there are three primary reasons:

1. Semiannual increases far exceeding inflation cause people to get fed up and unplug.
2. ATSC is a such a huge improvement over analog in many places, people who try it on their new widescreen TV wonder if they really need a $60 escalating cable bill for an inferior picture. So unless they need HBO or ESPN, they unplug too.
3. Comcast's legendary poor customer service drives customers away as well.