Let me explain. All of questions are great, it's that to explain some will require books, those are hard and there are no simple answers. Others are easier to put into context.
Let's take state of preparation. I've been through a handful of serious hurricanes, but everyone I know thought this would be like those before. Unfortunately the magnitude of devestation compared other storms was nothing close to the collective known experience, so few prepared sufficiently, across the board government, utilities, private sector, citizens.
So the go!den question, knowing what we know now, will for the next one will we be better prepared. That's a more complicated yes and no. For the entities that can afford it, sure. Those that can not afford it, will not.