If a city extends their subway network, they dont demolish all buildings on top, lay the tracks, and then rebuild. They do it without any major interference to the surface. Similarly for mountain tunnels, you dont start by demolishing a mile of rock. We just dig the tunnel.
Couldn't someone invent a robot to dig fibre tunnels? Then we wouldnt need to bother any shop owners or neighbours with noise and inconvenience?
It amazes me how difficult it seems to get the same in more developed places like US/Canada.