Given the vast amounts of constant external investment money they need to keep operations, and how little moat (if any, besides influx of investor money) they have, I'd argue it's not that far fetched. Also, they are all american, so as a non-american, I also don't see it that unlikely to suddenly not being able to access these model-as-a-service services
VPN? I'm not in US either but there's not a single US-only online service that I can't access.
If the planning-for-a-$2T-IPO company shuts down overnight, unexpectedly, you might want to do some actual doomsday prepping (like, canned food).
First time?
Eh, it wouldn't be the first unicorn to go up in smoke just after the IPO