> as far as I know there is no equivalent body of law governing usage. You can't give someone information but attach conditions to its use There is, and you c

> as far as I know there is no equivalent body of law governing usage. You can't give someone information but attach conditions to its use There is, and you can. It's called patent law. If the author of this license also had a patent, they could deny others the ability to use it. But unlike copyright, you are not automatically granted a patent for your creations.