Are you thinking of the siklu ones or someone else? I'm not aware of any that have been around that long (not arguing just curious) I was thinking of the IgniteNet and MiktoTik versions which I think are both more recent as well as PtMP applications which (I think?) Aren't really generally available yet.
True on knowing how to properly use them! Although to be fair I think most of the ISPs using them don't have a lot of use for really short, high capacity backhauls they're often looking for distance in rural areas.
Bridgewave shipped 60 GHz products 6 years before Siklu... Ignore the Ignitenet, it's a USB 802.11ad dongle glued into a radome. It's a toy. The Mikrotik doesn't have the reach to be a serious product. You can use "real" 60 GHz PTP stuff at five nines at 500-600 meters distance in a moderate rain zone, the mikrotik is good for maybe 90 meters.
Ah yes I forgot about Bridgewave. Agreed on all points for infrastructure needs. I would only add that when I read the OP (of this thread)'s comment I imagined using very very short/inexpensive 60Ghz links from neighbor to neighbor to create a kind of mesh. Possibly not what OP had in mind but it's the way I interpreted it. For that use the MikroTiks might actually make a lot of sense. (Very cheap and low range.)
Edit: Also since you're obviously knowledgeable about this stuff and I don't see a way to contact you on your profile - I've been running a matrix chat room around some of this stuff and would love to have you join! https://riot.im/app/#/room/#startyourownisp:matrix.org
True on knowing how to properly use them! Although to be fair I think most of the ISPs using them don't have a lot of use for really short, high capacity backhauls they're often looking for distance in rural areas.