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
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