This doesn’t seem to be a problem with disaster recovery plans. It is perfectly reasonable for disaster recovery to take several hours, or even days. As far as DR goes, this was easy. It did not generally require rebuilding systems from backups.
In a sane world, no single party would even have the technical capability of causing a global disaster like this. But executives have been tripping over themselves for the past decade to outsource all their shit to centralized third parties so they can lay off expensive IT staff. They have no control over their infrastructure, their data, or, by extension, their business.