"Comcast, Time Warner, Cox Communcations and Advance/Newhouse Communications plan to bundle wireless phone service from the new alliance with their existing high-speed data, voice and video packages. Cable companies have used bundles of services effectively to compete against telephone companies like Verizon Communications and SBC Communications, which are each starting to enter the video market."
Sprint/Nextel isn't exactly the crown jewels of the wireless industry but I guess they are the only ones left to pair up with. I suspect this will help them more than the giant cable companies.