Doesn't aerial deployment of fiber have the exact same benefits and drawbacks as aerial deployment of electricity, or anything else? In my neck of the woods (northern Europe) aerial deployment of electricity has been frowned upon for a long time: while cheaper, it is much more likely to cause outages due to environmental factors (or sabotage), so while digging down cables is more expensive, it's a lot more cost efficient in the long run because you don't have to send out technicians multiple times a year to climb poles, fell trees, patch lines etc. -- so pretty much all new deployments are dug down, and the most affected lines are converted to ground lines.

I would be interested to hear about these considerations from someone knowledgeable in electric and fiber nets, maybe fiber is somehow different?