A couple of years ago they started replacing the pole2pole cables with something less commercially attractive though, I think they're now mostly made of steel or an alloy instead of copper - Lupus will know.So if some wag steals the cable which goes from your house to the electrical pole, it's your problem... which is fair enough.
But if they steal the cables which goes from pole to pole, it's their problem, they cannot pass that cost to the consumer as the levies should cover that.
Expect levies to go up steeply in order to cover these losses.
Also don't expect their technicians to be able to come out and replace stolen cables as they may be attacked by thugs.
Mine got changed back then, used to have plenty of theft and it stopped.