Owning the copyright is not enough. You have to protect it.
If you write books and publish them, in paper or online, through a publisher or by yourself, you need to learn how to protect your copyright interests. Let your imagination be your guide. Who would have envisioned these events? Don’t leave it to the science fiction and fantasy writers to imagine life, and publishing, in the future.
If you write and publish, make sure you consult with a writers’ group that has people who could link you up with an attorney who knows the publishing business and contracts.