[.:4:.]

Whilst fibre can deliver more information, it takes less time for a signal to travel down a copper wire. That's not to say fibre isn't better, however it has to be boosted every 2km. That means greater upkeep on the infrastructure. Optical fibre can't be tapped like copper either. I have a set of line taps for copper for work but once the glass is broken or the reflective foil is comprised, fibre won't work. It's much more secure.