Why don't potato chips go bad?

Could you please explain why potato chips, despite being a snack made from potatoes which are prone to spoilage, seem to maintain their freshness for extended periods of time? What specific factors contribute to this phenomenon, and how do they work to prevent the growth of bacteria or other microorganisms that would typically cause food to spoil? Additionally, is there a specific type of processing or packaging used in the production of potato chips that plays a role in preserving their freshness?