Interesting, just the other day read pretty much the same question on SE: https://law.stackexchange.com/questions/101591/is-there-yet-a-standard-simple-license-

Interesting, just the other day read pretty much the same question on SE: https://law.stackexchange.com/questions/101591/is-there-yet-a-standard-simple-license-header-that-prohibits-machine-learning https://law.stackexchange.com/questions/101591/is-there-yet-... (spoiler: the answer is "no", of you trust these folks). Of course you can always roll your own license, but the main questions is, how are you going to enforce it in practice.