Which condition is most associated with the existence of a free-rider problem?

• A. Excludability leads to free rider problem.
• B. Private goods have free rider problems.
• C. Non-excludability leads to free-rider problem.
• D. Rivalry leads to free rider problem.

Answer: (C)

Non-excludability is the condition most tied to the free-rider problem. When a good is non-excludable, it’s hard or impossible to prevent people from using it even if they don’t pay. Because individuals can enjoy the benefits without contributing, they have little incentive to pay, and everyone hopes others will cover the cost. This leads to under-provision or no provision of the good in a market, which is the essence of the free-rider problem.

If a good were excludable, providers could charge buyers and prevent non-payers from using it, reducing free riding. Private goods are excludable and rival, so the market can allocate resources efficiently through price. Rivalry by itself doesn’t inherently cause free riding; many non-excludable goods are also non-rival, which strengthens the free-rider tendency.