Forget Redbox. Forget Blockbuster. Even forget DVDs and Blu-ray discs. They represented "a moment in time in the studio business," Comcast Chairman and CEO Brian Roberts told the UBS Global Media and Communications Conference in New York Monday. Roberts predicted that in the not-too-distant future all videos will be delivered to consumers online and on-demand -- and because cable operators like Comcast have the biggest "pipes," they'll be the preferred delivery channels. Taking note of the fact that the studios have already been hit by markedly lower DVD sales, Roberts said, "To the degree that we are America's largest provider of VOD and America's largest residential high-speed Internet provider, maybe we can be helpful."