How often do entire DCs suffer catastrophic loss? Not just an hour or two of connectivity outage, but “meteor-strike”-type scenarios - or more likely: a fire that takes out an entire rack or row of racks? How often does it happen in developed countries (where fire fighting infrastructure is in-place and building fire-codes are enforced) vs worldwide average? Has it ever happened to a brand-name cloud provider (AWS, Azure, GCP)? How does it compare to self-managed co-lo?