WHEN NBTEL FIRST CAME to market in 1998 with a digital TV product serving customers in Moncton and Saint John, N.B., the cable industry laughed. Sure, it was all-digital television, but each TV needed its own set top box, channel-changing latency was a problem and due to the limitations of the early ADSL technology it used, all the TVs in the house had to be tuned to the same channel. Fine for homes without a second TV, but not so much for most folks. At the time, NBTel (which is now Aliant) was the North American leader on the TV-over-twisted-pair...