I may be misremembering but this is what happened with recent the Open Gaming License fiasco. As I recall, they inevitably changed the current one with a claus

I may be misremembering but this is what happened with recent the Open Gaming License fiasco. As I recall, they inevitably changed the current one with a clause saying “we explicitly can’t pull the rug out from folks anymore with this license”. Simply ensuring that while they can create new licenses for new content, that can’t mess with creators who adopted the previous one.