My fiber line (Mountain View, CA, US) is aerial and uses the same poles as electricity. Strong winds cause tree branches to break, which in turn often cut wires

My fiber line (Mountain View, CA, US) is aerial and uses the same poles as electricity. Strong winds cause tree branches to break, which in turn often cut wires. So, they might, but it's less robust than underground, which results in more maintenance and more operational costs to the internet provider.