You'll be happy to know that the Aereo crew (myself included) is currently working on a fixed wireless ISP using millimeter waves and some very fancy active phased array technology.
And naturally, live TV, i.e. multicast, is easy and almost free for any wireless system, for example Starry or Google WebPass. And offers a good launch point for wireless internet services.
Still doing crazy stuff with antennas.
https://starry.com/internet
https://www.youtube.com/watch?v=r7YYAc9rq4g