Whoo-boy, you sure struck a nerve with that initial post, "So-and-So".
Yes, there are a lot of demos released, and yes, there are also a growing number of completed games. It takes a lot of time and energy to actually complete a game. By releasing demos, developers get motivational feedback by seeing responses. However, after that motivation has worn off, the larger task still looms ahead and it's sometimes easier to simply start a new project (I know, I'm guilty of this).
Thank you "So-and-So" for your observational reminder and "boost", and thank you too, members of this board, for the list of in-development & completed games and continual support for various AGI related questions.