"The few businesses that are still open are so busy..."
I am not sure about your area, but I have seen types of businesses being closed, not individual stores. For example, grocery stores stay open, gyms close. In my observations, it was not "only this particular grocery store can stay open". It may be different in different locations, for all I know. No crowds in grocery stores I have seen. In fact, they limit the number of customers at any given time.