Imagine a playground where children share toys. If one child keeps all the toys or leaves a pile of broken blocks, everyone else has a harder time playing. In the economy, a market fails when the “playground” (the market) doesn’t distribute resources efficiently, leaving some people worse off. 🚸
| Type | Example |
|---|---|
| Externalities | Factory pollution (negative) or a community garden (positive). |
| Public Goods | Street lighting, national defence. |
| Information Asymmetry | Used‑car “lemon” problem, health insurance premiums. |
| Monopoly Power | Single supplier of a unique product. |
Taxes and Subsidies – Add a tax to negative externalities to make the producer pay for the damage.
Example: Carbon tax on cars.
\$t\$ = tax per ton of CO₂ emitted.
Regulation & Standards – Set limits on pollution or require safety checks.
Example: Emission caps for factories. 🚫
Provision of Public Goods – The state supplies goods that the market would under‑provide.
Example: National defence, public libraries. 📚
Price Controls – Set ceilings or floors to keep prices fair.
Example: Rent controls in high‑cost cities. 🏠
Information Disclosure – Require firms to reveal product details.
Example: Food labelling, safety certificates. 📄
• Identify the type of market failure first.
• Match the appropriate government tool (tax, subsidy, regulation, etc.).
• Use real‑world examples (e.g., carbon tax, public libraries).
• Remember to explain the economic rationale behind each tool.
📌 Good practice: Write a short paragraph for each tool and its effect on efficiency.