When the government is taking care of a certain aspect of your life, it is understandable that having to provide those services yourself is scary. Many people will not see the potential the free market will provide at first. How will children be educated? How will the poor and disabled be provided for? How will roads be built? All these things will emerge in the free market within the transitions periods.
If the government were in total control of the production and distribution of food, most people would not be able to see business plans develop. Understandably, some people would be concerned to rely on the free market. However the free market provides food in abundance to the rich and the poor and the number of products produced are extraordinary.