That's unrealistic. The problem is most restaurants in America exist in rural areas in commercial food deserts and are almost entirely dependent upon mega broadline suppliers that have merged into de facto oligopolies. Furthermore, by offering a wealth of finished items, in addition to ingredients and supplies, it's seductive to restaurants use these boring, lazy, pre-made offerings rather than cooking from scratch like respectable restaurants that do the work and pay the cost of sourcing quality ingredients, taking the time to do the preparation, and cooking good food.