I find it weird many people are just realizing this. I've had this conversation with regards to talking about what should happen if a couple of bad earth quakes, not even "the big one", were to occur.
But on the other hand, maybe I hang around too many tech people to not empathically understand the other point of view.
We've seen big outages already but nothing that lasts too long. If an outage became prolonged enough, people would find solutions. We don't know what this massive outage would even look like, so whatever preparation you do, it might still break.
Also there are some outages that affect real life like airlines, but tech news overstates some like Facebook. It turns out that FB and IG can be totally broken for a whole day, the world will keep spinning, and they won't even lose users.
I think many (most?) non tech people don't even know that Amazon is first and foremost a cloud provider (and one of the biggest at that, if not the biggest) and that its market thing is almost a side activity at this point.
But on the other hand, maybe I hang around too many tech people to not empathically understand the other point of view.