MonkeyBrains is not quite what we call "WiFi"; it's in the 80GHz spectrum. (I thought it was 60GHz, which is becoming a WiFi spectrum, but their page says 80. So I don't fully understand what they're up to.)
Beamforming and directional antennas works really quite interestingly on the higher frequencies. I think their stuff could work. It's not obviously doomed to failure, like most 2.4GHz-based WiFi setups are, in my opinion anyway :)
What we are up to is building a high speed 24Ghz/60GHz/80GHz point to point meshed network. MonkeyBrains will continue to pull fiber to our endpoints and continue with more affordable 5GHz antennas for residential users.
Check out Siklu, SAF, AthenaWave, AirFiber, etc to see some of the antennas that talk outside of (normally) consumer grade frequencies.
And yes, we do have an FCC filing in place to deploy 80GHz gear.
Beamforming and directional antennas works really quite interestingly on the higher frequencies. I think their stuff could work. It's not obviously doomed to failure, like most 2.4GHz-based WiFi setups are, in my opinion anyway :)