Yes. I have some friends and family members who live anywhere between 1 mile and 10,000 miles away, in both same country and other countries, that I can turn to provide me with food and shelter if my home is no longer available for some reason.
Regardless of them, I can take shelter short term in a hotel or other rental facility, as I have sufficient savings that I'll continue to be warm and fed.
The comparison doesn't hold up. A business cannot just reform overnight if critical dependencies disappear. A person can.
This is equivalent to knowing you could get a hotel room or crash with a friend, instead of maintaining a whole second home yourself.
But my company does everything we can in order not to have a single point of failure, however unlikely it is to fail. Because low probabilities of something still mean it can happen, and you don't want to allow that if you can avoid it.
The startup costs, ongoing maintenance, and organizational costs of mitigating this kind of risk have to be considered with an evaluation of the likelihood of the event occurring. And other things the company could do with those same resources.
Do you have a fully equipped backup home somewhere far away you keep stocked with consumables and perishables in case where you live is destroyed by a meteorite one day? If not, why not?