That's fine. If a tornado ripped through their datacenter, I could see that being Force Majeure. Failure to have a backup generator (or other power protection mechanism) is not force majeure and you would be hard pressed to find a judge that would say otherwise. Failure to have power for any reason is considered a predictable event that any datacenter operator should be able to deal with for 24 hours.
No, I don't know for fact that they don't have adequate power backup. I do know for fact that they didn't loose their roof. I also know, as I live in the general area, that other than a few trees down here and there, power was the only problem.
I certainly didn't see anything about trees falling on datacenters in the storm reports I've read through. I have, however, read about many many people being out of power because of the winds.
The inability for AT&T's datacenter in Michigan to have power backups that can last more than a day should hardly be considered a natural disaster.
I'd love to see something happen in terms of getting money back, but somehow I doubt most subscribers care enough to push for it.
Then amazon needs to do a much better job of determining who their clients really are, and there are quite a few fairly reliable ways of doing so.
Nothing is perfect, but it can be made very hard.
It seems that more and more mathematicians are using a new, high level language named "research student".