Franz Kafka told his friends, in no uncertain terms, that upon his death, his unfinished works should be burnt. This included The Trial and The Castle.
We never had the right to tell the future what to do. That was never part of the deal. We barely have the right to tell other people what to do with the ideas we breathe into the world, and that right was only carved into the US Constitution (and English common law before it) because it was believed that it heavily incentivized creating more ideas.
In the era where information flows as freely as it does... I'm not even sure that incentive works the way it was intended to anymore.
When I'm thinking about this, I usually flip the script: why should Disney have the right to tell everyone what they're allowed to do and not do with a picture and audio of a cartoon mouse for a person's actual entire life?