Comcast (CMCSA -0.37%) (NASDAQ: CMCSK) is turning heads this week by beefing up its Internet service and rolling out a new cloud-based DVR.

Comcast stock hit a new high last month, but it's been watching video customers decline for several quarters. It can't afford to lose them, so giving customers more bang for their buck makes sense.

In this video, longtime Fool contributor Rick Munarriz explores what Comcast, AT&T (T 1.88%), and DISH Network (DISH) have been doing to make their pay-TV offerings more compelling, and why it's so important.