Super-wi-fi in TV broadcast white spaces to extend AREDN

An article https://www.nytimes.com/2017/07/11/technology/to-close-digital-divide-microsoft-to-harness-unused-television-channels.html?_r=0
"To Close Digital Divide, Microsoft to Harness Unused Television Channels" describes a "super WiFi" using empty TV channels to create long distance
"behaves like regular Wi-Fi but uses low-powered television channels to cover far greater distances than wireless hot spots. It is also more powerful than cellular service because the frequencies can penetrate concrete walls and other obstacles."

Don't know if they are proposing a system whehe you could set up your own point-to-point super wi-fi" network, or if it would just be a subscription service where some company provides you a super wi-fi node like the way the cable company provides you a cable modem.  If it is a system where you can buy the nodes and set up your own network, we might be able to use it to bridge AREDN "islands" that can't see each other on the usual "wi-fi" bands.  Like around my QTH that has tall trees and rolling hills.  But if the RF characteristics of UHF TV frequencies vs 900MHz are not much different, than there's no reason to presue this angle...

And there might not be any usable white space around big cities, as you'd need to be a couple channels away from a broadcaster, so you wouldn't jam TVs in your neighborhood.