I have a second fiber connection and found out recently that both fibers come along the same route and when a fire took out a utility pole, I lost both connections.
I then found out that all providers bar one (there are 5 or 6) come along the same street.
So if you are going to go with this option choose carefully your providers!
I'm sure they must share some infrastructure, especially the small local providers, but after the fire there were a dozen vans parked outside, each putting up new cables.
I dumped DOCSIS the moment fiber became available. With cable, I'd go through periods of 1% to 3% packet loss. It also affected the neighbors, so it wasn't my "old modem" as the tech once tried to claim. When it was at its worst, I saw my upstream bandwidth drop below 100kbits/sec due to all the TCP retransmissions.
Eventually they admitted it was an "outside plant" issue and beyond the responsibility of the home techs. It took months to finally get it fixed. Who knew if it was actually fixed, or it was just a fluke, since the problems would come and go.
Even when it worked, upstream was capped at 30 megabits/sec, which was pretty painful for large uploads.
Gotta love the new suckered generation of "Fiber-Powered With Asterisks Internet" being advertised by the cablecos. "Fiber powered and delivered to the home by HFC!"
I then found out that all providers bar one (there are 5 or 6) come along the same street.
So if you are going to go with this option choose carefully your providers!