In rich countries, where the primary producing sector usually has political power, stockpiles of food products are used as a means of keeping prices high rather than low. The European Union’s Common Agricultural Policy is a classic example – and is disastrous for EU budgets, economic efficiency, and consumer pocketbooks.
从理论上讲，政府储备或许可以熨平价格波动。但这取决于政府如何管理储备。历史记录并不乐观。