If fiber to the basement is profitable, why not wireless to the rooftop? I broke the story that a small N.Y. outfit, Skywire/Xchange, is doing G.fast over WTTR, Live from New York. It's G.fast with wireless backhaul. AT&T has been vocal they plan using G.fast, which is already in early deployments elsewhere and would work over both coax and existing telco twisted pair. I believe they are not using G.fast at this stage, although it will be a natural choice going forward.
AT&T's WTTR looks to be the same as Google's new Webpass division. Companies like Towerstream have been beaming mmWave to rooftops for commercial customers for more than a decade. Hundreds of wireless ISPs rely on mmWave backhaul as do most mobile towers around the world. The technology is old but few have done WTTR for consumers.
For $3,000, you can buy a pair of Ubiquiti radios to carry a gigabit. Siklu, which supplies Google/Webpass, and Ericsson have five gigabit units available with low latency.