A business with zero debt financing would not go bankrupt during this crisis, but they would still have to lay off employees in the meantime, and those employees might "starve" without another source of income.
I really, really don't understand the need to bail out companies here. If the problem is a loss of income for the employees, then strengthen unemployment insurance. If the underlying business was sound, then it will start back up again when the crisis is over. If the owners of the business were leveraged and cannot sustain debt payments during the crisis, then they can go into bankruptcy protection and emerge with new ownership.