In case it happens though, you are better of farming stuff like potatoes and chicken than developing software until government steps in with fiscal stimulus, though it will require some existing capital.
Various governmental interventions (stimulus, rent freezes, etc) can ameliorate this, but I'm not confident (and the financial sector isn't confident, I think) that the government is presently competent enough to get too much mileage out of implementing these; stimulus needs to be done correctly and promptly to have much effect.
If you're in (or your customers are in) an industry that can hunker down and "weather the downturn," the eventual return to normal will be priced in and you'll likely be fine. If you're in (or ditto) an industry that will suffer attrition, the uncertainty will be priced in and you're liable to suffer. Give some thought as to where you stand.
In other words, providing a stimulus package paid to the right people can prevent it.
That being said, as an aside, imagine slipping into a 3 month coma from a heavy Christmas 2019 party and waking up to eight other people on ventilators in your room. Imagine finding out Kobie Bryant died, that the USA assassinated a top Iranian military figure, and that the world economy dropped 35% in 1 month.
You'd think there was a war.