This is just the upside of running your own business. Summer food trucks have been a fixture in my city for decades around the state capitol. Some folks make a great living doing it. My favorite was an older couple operating a small hotdog stand... they made a ridiculously delicious meatsauce and basically worked a 35 hour week in the summer in the Northeast, and a similar schedule for a couple of months down South.…
> But... they faced all of the downside risks of small business owners. Rain == slow or no sales. Big vacation weeks for the workforce == slow sales. Get sick? No pay. That said, it's probably still a better gig than being a game programmer. Small business owners should be able to plan ahead for rainy days and the slow season. Squirrels can do it. Humans can too.
Sandy in NYC flooded a great deal of infrastructure and left buildings without power or communications for a long time. Large parts of downtown were completely depopulated for weeks on end - that sort of event takes out independent business owners, and you can't effectively plan for it.
For the most part food vending isn't so profitable that you can build up a thick cushion for longer-term outages.