This game hasn't made any money for a couple of reasons.
1. It doesn't really know what it is.
Is it story about cheating?
Is it a corruption story?
Is it a romance story?
Is it a supernatural story?
Is it a bang the family story?
Is it a story set in medieval times?
Is it a story about a fuckup mma star and his exploits in Thailand?
This game has tried to be all of those things and pretty much failed at all of them. It is a classic case of a dev, talented at story writing and character development, and definitely talented at rendering and coding simply biting off more than he can chew. THis complexity of story telling would need a full team behind it to support the scale of the game.
2. Unrealistic expectations
From the very beginning we saw the dev expecting money to flow in, this rarely happens. He is pulling in just over 300 dollars a month. which isn't terrible really for a game with such a small footprint on the internet. He has done practically no effort in promotion, instead expecting the game to sell on its merits. He also expects what is an extremely slow burn of a story to attract big bucks, which will never happen given the lack of the major money tags.
3. A poorly designed patreon, and lack of interest generation.
Looking at GGGB as an example. You had your preview release, your alpha, your beta and then final. This tactic kept the game in the spot light time after time after time, and as far as I now, eva missed hardly ever on hitting the monthly update cycle
This game hasn't failed for technical reasons. It has failed for the lack of effective story boarding, the lack of development of an effective workflow setup, the lack of proper editing, and long term vs short term story development. The devs expectation of 2000 dollars to restart to v.08 really shows his lack of understanding of how the market he is in works. If he pauses PI then I hope he uses the time to really investigate what makes the top tier of games SO successful, if he does this he might be able to reduce the hubris that is blinding him to the shortfalls of his game design and workflow, and hopefully allow him to work to his strengths, which are many, he is a talented game maker. But thee is more to selling a game that good renders and a good story.
Despite its shortfalls, I will be sorry to see this story end and I wish him well in his future games,