Most VN devs aren't writers. They just copy other games that are popular or create something that is easy to create sexual content from. Look at the various trope threads on here, many games have nearly identical plots.
Another thing holding back the writing of these games are the fanbase themselves. If someone makes a story based game with little lewd content, they'll get called a blueballing milker. If someone makes a slow burn game, they'll get tons of comments bemoaning the lack of sexual content. And so on.
The "market" if you want to call it that rewards lower quality sex games over story based adult games.
That is absolutely true.
It's like the dev can not make it right at all. He is always wrong.
I think when i started i liked certain games. AWAM is pretty good. Though there are some plots i don't like really.
This game has incest, though i never encountered it. Perhaps in a distant future there will.
The other i liked was Fashion Business. Though it fell for me in some regards, nevertheless the story is actually really good.
The speed is good balanced i think. I want to be fair to the devs.
On the other hand i did not play a lot of games. I don't have that much time to spare.
It's just a hobby and a boring now for me.
Even me, like millions before, thought i just make my own but it's really hard to make a game. So you look what people like but as i learned, you should do what you want to do and not what the crowd wants.
But even so, you most likely will be only good at one thing but not at the others. So dialog is something you got to learn. Even we speak daily but that doesn't mean you can write a dialog.
There are some smaller games that i think are great too. It really depends what your expectations are. Be ready to disappointed.
I think its probably to much of an expectations that a game here will be a true novella with interesting plots and an end that leaves questions. (This is the way i see a good movie is)
So far, the titles i mentioned are in development for years and i probably will never see the ending if there is one.
So that is that.
And yes, there is for sure there is a lot of copying because certain themes are just that. And with the constraints of legality, there is more or less a certain vanilla feel to all of them. So nothing really earth shattering. The only difference is sometimes just how great the animations are. Or how good the expressions of a character are.
I think i am ok. I rarely download a game these days. I rather toy with a render for my pleasure. More fun.