Where I live in the states, telephone pole access is "common use" but the bureaucracy around actually being able to do so makes it pretty much impossible to add new lines (eg: needing to get a expensive environmental review for adding a wire to a pole that already has wires). Last I checked it took about a dozen permits which took ~12-24 months to get. After you got the permits, you then needed to pay for the inspection and full replacement of any poles found to be old/substandard that you wanted to attach to.