IIRC, they bought a company that uses wireless APs to deliver the signals within municipalities/cities. The bureaucracy and cost was too prohibitive for physical fiber. At least that was my understanding of the situation last I had checked.
A good internet provider, though living in a snowy city, the signal can deteriorate a bit when you get heavy snowfall. Still usable, but slow in those cases. The symmetrical gigabit is damn nice 99% of the time.