Even technologies like this face many of the same challenges as traditional wired or wireless solutions: operating at any sort of scale is tremendously expensive. I wouldn't call this "disruptive" as much as a local workaround to an ineffective local regulatory system.
This is full of problems as far as i understand. Google and read more about it?
What problems?
Requires line of sight, is expensive, has high latency, and is somewhat flaky.
I know someone who has this service in San Francisco - they only have it because it's literally their only option besides ADSL.