It "works" but it is a mess. Large chunks of the spectrum require some combination of radar detection and power reduction, and if you live near a radar station you basically cannot use 160mhz wifi.

I will also add that 60ghz works great, but it will not penetrate walls. I have found it penetrates my doors and thus makes a great replacement for 2.4ghz/5ghz mesh networking in my apartment, but not much else.

> if you live near a radar station

This is actually incredibly annoying, especially in a residential setting where the 2.4GHz band is incredibly noisy (5GHz doesn't penetrate as well so it ends up being less noisy).

At that frequency, it becomes really hard to penetrate walls or travel without direct line of sight.