The copyright holder can choose to do that only after violations have occurred (and choose to permanently terminate the license even after curing the violation)

The copyright holder can choose to do that only after violations have occurred (and choose to permanently terminate the license even after curing the violation). See the verbatim quote from GPL3 in my other comment https://news.ycombinator.com/item?id=27897105 https://news.ycombinator.com/item?id=27897105