Z:gnu-www-ja-why-free--c3b462-As a matter of history, the op/en

As a matter of history, the opposite is true. The idea of natural rights of authors was proposed and decisively rejected when the US Constitution was drawn up. That's why the Constitution only permits a system of copyright and does not require one; that's why it says that copyright must be temporary. It also states that the purpose of copyright is to promote progress&mdash;not to reward authors. Copyright does reward authors somewhat, and publishers more, but that is intended as a means of modifying their behavior.