DALLAS – A U.S. report released this week says "there are a sufficient number of ambivalent or dissatisfied cable and DBS subscribers that a competitive offering with even slight cost advantages could be disruptive to the market balance." The report, by The Diffusion Group, predicts that with the right marketing, the television service offered by traditional telcos could gain 25% of a given market within two years of launch. (It's already happened in Winnipeg, for example.)"Some 84% of U.S. households now subscribe to some form of pay TV service, be it cable or satellite," said Dale Gilliam of The Diffusion...