the law of diminishing returns
• a principle stating that profits or benefits gained from something will represent a proportionally smaller gain as more money or energy is invested in it.
• "studies have shown investments in direct-to-consumer promotion suffer significantly from the law of diminishing returns"
diminishing returns
• proportionally smaller profits or benefits derived from something as more money or energy is invested in it.
• "diminishing returns on infrastructure projects may reduce the promised investment gains"
