I have AT&T Fiber – the installer ran a line from the nearest fiber hut to my home (across several neighbors' yards and a storm water runoff/drainage area), and left it exposed. But a separate truck rolled through about a week later and microtrenched it, so it's buried all the way up to my house.
Around me, you might see aerial to neighborhood cabinets, but everything past that (cabinet -> pedestal, pedestal -> premise) is always buried. Considering how much of a pain buried lines are around here, I had presumed that there was some value to this. But looks like it might just be a constraint imposed by local regulations.
[1] https://www.ofsoptics.com/fiber-optic-solutions-for-the-home...