> do accept (some concept of) copyright No, they observe that there are laws called copyright laws, and people will hit you with sticks and drag you to a locke

> do accept (some concept of) copyright No, they observe that there are laws called copyright laws, and people will hit you with sticks and drag you to a locked room and leave you there for years if you ignore those laws. Copyleft is a way of using copyright to force people to copy things that they don't even want to copy.