True, but the moment you have a street crossing (which requires municipal permitting and traffic management) the cost skyrockets unless there's existing conduit

True, but the moment you have a street crossing (which requires municipal permitting and traffic management) the cost skyrockets unless there's existing conduit under the street. Since that wasn't my situation I don't have exact numbers, but I wouldn't be surprised to know it would be $20k-$30k for each street crossing. If the GP of my original comment was in such a situation, it could easily exceed $100k for a fiber run.