At first sight, that makes a lot of sense. Harmonized systems of rules make it easier for capital and labor to move around in search of their best use.
发自布拉格——承载着欧盟单一市场的其中一块基石就是统一性。这上看去非常合理，因为一个统一的规则之下，资本和劳动力都能自由流动并实现最优配置。