Repairing the fiber is one thing, but what about when repairs on the power-carrying cable is needed? Wrapping them up in each other certainly seems like it would complicate things...
Yeah, they'd need to bring in a specialist to repair the fiber optics as well, that's a specialist job.
Of course, that aside, cables generally don't need repair that much / often if they aren't in areas with extreme weather. And if they are, medium-power lines can go underground (as can the fiber optics).
