Craig E. Moffett joined Sanford C. Bernstein & Co. as the Senior Analyst for U.S. Cable and Satellite Broadcasting in 2002.

Craig Moffett, perennial cable stock booster, predicts AT&T’s move to implement usage limits on its broadband customers will provide cover for cable operators to rush in their own Internet Overcharging schemes, starting with budget-priced usage plans.

Moffett released a research note Monday claiming Charter Communications, Cox Communications, and Time Warner Cable are among the first most likely to move towards limiting their customers’ broadband usage, with Comcast standing on the sidelines, at least for the moment.

Moffett thinks AT&T’s announcement is excellent news for wired providers, who could reap enormous new profits on top of some of the world’s most expensive broadband packages.

“AT&T’s move provides air cover that makes it easier for all of them to follow,” Moffett told his clients. “We view the move as good news for all the terrestrial broadband operators.”

Moffett believes usage caps have everything to do with stopping the torrent of online video.  He notes AT&T’s caps are set high enough to target AT&T customers who use their connections to watch a considerable amount of video programming online.

“Only video can drive that kind of usage,” Moffett writes.

Moffett has repeatedly predicted any challenge to pay television models from online video will be met with pricing plans that eliminate or reduce the threat:

“[I]f consumption patterns change such that web video begins to substitute for linear video, then the terrestrial broadband operators will simply adopt pricing plans that preserve the economics of their physical infrastructure,” Moffett said. “Of course, any move to preserve their own economics has far-ranging implications. Any move towards usage-based pricing doesn’t just affect the returns of the operators, it also affects the demand of end users (the ‘feedback loop’).”