Yes, I lament the passing of copper lines, replaced with glass (fiber optics) and pulsed photons. When the fallback to older times comes, all the copper will be scavenged and I guess much will be used for antennas and we will be back to radio for comm. Not even cell towers but old fashioned radio and frequencies you can handle with nearly electromechanical means. Crystal radios, hah. And vacuum tubes because you can make those by hand unlike pure silicon wafers.