Orders placed by AT&T in the coming year have the potential to revolutionize broadband globally, and some say the decisions AT&T takes may put Telcos back in the lead in broadband for the first time in two decades, ending years of cable dominance. That would be a major disruption if it happens and it would trigger copycat steps around the world. If so, then an announcement this week from tiny broadband modem chip start up Sckipio could be at the heart of that revolution, one that wrests control of coaxial cable from US cable operators, certainly in Multi-Dwelling Units, and it also let’s any type of operator make headway using coax. AT&T has been the trigger to multiple broadband revolutions,…