It's probable that licenses that explicitly allows revocation at will would not be approved by OSI or the FSF. Copyright law is also a complex matter which dif

It's probable that licenses that explicitly allows revocation at will would not be approved by OSI or the FSF. Copyright law is also a complex matter which differs by country and I am not a lawyer so take this with a grain of salt, but there seem to be "edge cases" where the license can be revoked as seen in the stackexchange page below. See: https://lists.opensource.org/pipermail/license-discuss_lists.opensource.org/2019-April/020398.html https://lists.opensource.org/pipermail/license-discuss_lists... https://opensource.stackexchange.com/questions/4012/are-licenses-irrevocable-by-default https://opensource.stackexchange.com/questions/4012/are-lice...