The usual argument for such a right is based on the assumption of perfectly competitive markets where factors of production are paid their marginal values and where there are no externalities.

• 一般认为，这样的权利是根据完全竞争市场假设，（在这个假设下，）生产因素被支付给他们的边际价值，并且没有外部性（注：可以理解为对其他人带来的好处）。