TFA isn't clear about this, but I suspect that all of the poles in question are actually owned by LG&E who operate the electrical lines that hang from them. So "...its utility poles" in the title should actually be "...the same utility poles it uses". There probably is some dumb FCC rule that supports ATT's position here, because after all those rules are written by ATT. One hopes that courts would decide FCC don't govern how LG&E's poles are used. If any agency would, surely it would be DoE?