The storm last Friday night on the East Coast caused such widespread power outages that it took down some cloud-based services, including Netflix. Some of the outages lasted as long as twenty-four hours, but in general, the cloud hosting providers got things back online quickly.
Here is the real problem: suppose your business is located in one of the areas where power won't be restored for a week. Your office has no power....for at least five business days.
Sitting in McDonald's and trying to run your business off laptops, along with sixty other business people, is not a plan.