This is exciting to see. In the start AIs will be used as assistants to human writers, but I imagine that in the future they'll progress to the point where they're able to write on their own with little to no human intervention. If programs can author books/screenplays/etc. for free, that's going to revolutionize the world of fiction. I don't think we need to get to the point of AGI to see bots that can hold their own against human authors.