Yes the game had so much potential and compare it to Karlson Gambit is an insult to Estate dominate. I just replayed KG last week from start to the actual content and it was sometimes ok, sometimes bad but certainly not the same level as ED.
The main problem is that the dev almost never went here or in any forum to talk about his game and was not really communicative in any way.
But the lack of succes for this game mostly comes out of the theme, heavy submission and humiliation and the fact that even if you try the dom route you still are a slave. Many people here don't like this at all, they want to control the game and be the hero.
This game gives you a deep feeling of despair and if you really immerse yourself in it it can be quite harsh.
So with that kind of theme you already loose most of the players here. KG is different, it's more childish and the women are often just pretty pinups in skimpy clothes whith a ridiculous mistress attitude, i don't know how many boots i have licked in this game that was stupid after a while. And in KG you can almost reverse the domination and be the master, so the little insecure teenager players can be reassured, they are still men after all!!
Then later when the dev let his game on hold and started complaining about the fact that he got just a few patron and not enough to be worth it, he start accusing piracy, a very good way to alienate people who discovered his story here.
Many devs don't really get it that if you want succes you cannot just create a masterpice and just put it in Patreon, the large majority of players discover those games here and in other sites, play them and if they like them they make a pledge in Patreon to help the dev.
Well maybe only 5% will pay for the game, but if the game has a lot of succes you can get thousands of patrons.