They're suffering already. My brother is a chef at a very popular restaurant, and the last few weeks have been the slowest since the place opened decades ago. Even with the ability to do take out, restaurants are going to close and put people out of work.
I hear you. My sister works for a restaurant in Napa, CA and was panicking this morning a little bit about job security. I'm mostly bummed by all this because I've been making a point to keep supporting the local restaurants as best I can like normal. I know it's not enough but it still sucks.