I agree with much of what was written so far.

I would add it depends on the adaptability of the individuals involved with the individual businesses.

After hurricane Andrew when our grocery store was out of power, they were still conducting business in the dark because the workers could critically think and conduct business with flashlights and calculators.

It's kinda funny and reassuring to see people walking through the grocery store with flashlights, young people helping the older ones who couldn't see as well...

The folks I saw working had a certain air of pride still being able to function like like that.