You make it sound like this is just delayed revenue while the e-commerce front page is down.
Almost any organization today has (Windows) computers intergated into their workflow and operations. Hopefully no plane's onboard computers run Windows but there's still ATC, ticketing systems, baggage handling systems, security checkpoints, ... Similarly for hospitals and various other organizations responsible for people's lives at any givem moment.
And as a company you still have to take care of them. That means rerouting planes around "bricked" airports (but to where if your computers can't get the status of alternate airports?). It's meant canceling non-emergency surgeries and pausing patient visits because doctors can't access patient medical records. But which surgeries to cancel? Get the patient list from the ...oh...just call the patients and ...just get their number from the...oh
Unfortuantely we haven't designed our critical infrastructure/systems (in the broadest sense of the word systems) with resiliency in mind.
The IT leadership who went with a multicloud solution gets it:
UniSuper, a $135 billion pension account, details its cloud compute nightmare.
arstechnica.com