As I understand, this is very low distance, basically for office settings. What ISPs will do to connect to/provide connectivity to a remote site is install point to point microwave radios. They are not impacted by weather too much, but they do lose signal strength if the radios are misaligned. There have been some funny situations where signals will be out of spec because protected birds like bald eagles are nesting on the radio and it is illegal to disturb their nests, or squirrels are storing acorns in them.
That is what service providers will do if they want to offer cellular connectivity to a small town where running fiber would cost millions of dollars. They will contract a service provider to provide CTBH (Cell Tower Backhaul) via point to point microwave radios. Multiple radios can be used for redundancy / to add bandwidth capabilities by bonding channels together, suddenly they can provide 4g/5g cellular connectivity without needing to spend millions of dollars in installing fiber.