Government Provision Overcomes Free Riding in Public Goods

Steps:

• Public goods are non-excludable and non-rivalrous, leading to underprovision as individuals benefit without paying.
• Free riders consume without contributing, causing market failure where private firms won't supply enough.
• To solve this, collective action is needed to fund and provide the good.
• Government direct provision uses taxes to ensure supply, internalizing the benefits for all.

Why B is correct:

• Direct government provision addresses the free rider problem by coercively funding non-excludable goods through taxes, ensuring optimal supply as defined in Samuelson's public goods condition where marginal social benefit equals marginal cost.

Why the others are wrong:

• A: Advertising campaigns raise awareness but don't enforce contributions, failing to compel free riders to pay.
• C: Minimum prices distort markets for private goods but can't exclude non-payers from public goods.
• D: Taxing substitutes reduces their use but doesn't generate revenue or provision for the public good itself.

Final answer: B