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身边的经济学·社会常识英语精读30篇（4）

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When Markets Fail—And Why Governments Sometimes Step In

When Markets Fail—And Why Governments Sometimes Step In

市场失灵之时：政府为何有时必须介入

  1. Markets excel at matching buyers and sellers—but they often ignore harm done to people who aren’t part of the transaction.
  2. A factory dumping waste into a river lowers its costs, but downstream communities pay with polluted water and higher medical bills.
  3. This mismatch—private gain versus public cost—is called a negative externality, and it’s why regulation exists.
  4. Similarly, vaccines create positive externalities: your shot protects others, yet the market underprovides them without incentives.
  5. Pure competition assumes full information, but few consumers compare insurance plans by reading 80-page policy documents.
  6. When one company dominates broadband access in a region, prices rise and service quality drops—not because of inefficiency, but lack of choice.
  7. Pension systems rely on trust across generations; left entirely to markets, many would save too little or invest too riskily.
  8. During pandemics, uncoordinated private responses lead to mask shortages, testing bottlenecks, and unequal vaccine distribution.
  9. Government intervention isn’t about rejecting markets—it’s about correcting conditions where they systematically misallocate resources.
  10. Well-designed rules don’t replace entrepreneurship; they define fair boundaries so innovation serves society, not just shareholders.
  11. The goal isn’t perfection—it’s preventing outcomes where the invisible hand accidentally pushes people off the cliff.
  12. Smart policy asks not ‘should government act?’ but ‘what problem does this solve—and what new friction might it create?’
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