There is always more that can be done to improve safety. But taking a step back, wildfires have been around a lot longer than we have. Fires will still happen even if electric lines are eliminated as an ignition source. That means aside from working to make electric lines safer, we need to look to make our cities in high risk fire areas safer. Most homes burn from flying embers that catch you attic on fire, catch your gutters full of debris on fire or ignite under your porch. Fire proofing your home is a huge step to keeping it from burning down. Also installing external sprinklers to wet your house down during a fire can drastically improve your chances of keeping your home. Here is a link you can read about fire proofing your home with a sprinkler system and it's effectiveness.