Because there is a war going on that is affecting everything in the dev's life, including his ability to get paid for this, and his family's lives. So, the ending was not what he wanted, and he had hoped to go back and expand it, but everything is kind of crashing around him. So, sadly, that doesn't seem likely, at least not any time soon.
We don't hear from him much, but he is worried about getting drafted on top of everything else, and having to go fight his family and friends. So, some things just had to take a backseat.