I'll be brief because my language isn't English, sorry.
Don, I don't see the huge problem he's creating with this series. While it's true that those of us who read it from the beginning, started by other authors, follow it to see how it ends. The attempt to lengthen the story simply for the sake of making money and making it profitable is a good idea. Do you know where this is going to lead you, Don? It means that the next story you write won't even get started.
That said, I like the way you write. Don't get lost in the immediate money-making process.
In any case, thank you very much to you and to everyone who writes and creates art.