Also, an author could write books that are given to some type of trust or foundation with explicit orders not to publish them until certain favorable copyright

Also, an author could write books that are given to some type of trust or foundation with explicit orders not to publish them until certain favorable copyright or distribution laws are available. So it could be possible to “be incentivized” to publish new works even after you’re dead. For the estate of an author that has developed a reputation, say like JD Salinger, this would be a very smart thing to do if you wanted to influence policy beyond your death.