Burying those lines is not practical. Inspecting and repairing them is. The problem is significant deferred maintenance. Buried lines cost much more to maintain

Burying those lines is not practical. Inspecting and repairing them is. The problem is significant deferred maintenance. Buried lines cost much more to maintain, in addition to installation costs even where they are feasible. It's better to make sure (1) the towers don't fall down (2) into a forest ready to ignite. That can be done, but we have to pay.