All you have to do is sell food to stay open. Sometimes not even that. Most of the big box retailers added grocery in the last couple of decades. Even office max was open a few days ago when I needed some shipping supplies.
I'm in Santa Clara county, CA. Where it first started and the first restrictions were put in place (a short walk from the first case in a hospital in the US). I can imagine that there are a few places stricter, but I haven't heard of any of the traditional big box stores closing (at least any of them which would have a banana for sale).
