I mean there is a game called "A Mother's Love" in which pretty much you can bang the main character from the second update and now has over 10 updates in which you can bang the mom left and right... and ppl (myself included) aren't bored with the game cuz it has a good story and we can't wait to see what's next, so this bs from devs that ppl get bored if you bone the main li's to early is nothing but a lame excuse...
Yes, what I said is not an absolute truth, but it happens a lot. I myself am one, who after a while ends up losing interest, after seeing a few scenes of the same character, and I want to see new things.
Yes, I know, I spoke for myself, but like me, there are so many others. And to be honest, the incest theme is quite saturated (although I still like it), so I usually speed up the dialogues to get to the scenes, that is, when I don't just take a look at the images/animations, without even opening the game. As for the game mentioned, I also abandoned it, I've seen enough scenes. I was once a consumer of this type of content, but I no longer see myself wasting hours reading texts in a porn game.
My two cents.