The businesses don't disappear because the doors close for a few months. People will still have their colleagues’ contact information to be able to re hire and start again.
I’d wager those businesses are already classified as essential and kept operating. And if not, that can be a separate issue the government can tackle, but there’s no need for it to be conflated with the issue of keeping people fed and housed.
just like keeping people fed shouldn’t be conflated with keeping businesses operating and solvent. your logic cuts both ways and businesses shouldn’t have been brought up by the grandparent in the first place