I think what really bugs me is it's often the ones I find interesting that get dropped.
Maybe it's that the stories are too deep and complex and the dev ends up feeling like they bit off more than they can chew, for some VNs the gameplay mechanics are quite complx so, again, maybe they become too adventurous. But they're the ones I find interesting.
But it somewhat puts me off wanting to try out anything that's not already under significant development, or already finished.
It definitely puts me off subscribing via Patreon, etc. And whenever I'm saving money (which needs to happen annoyingly frequently), the Patreons without recent significant updates are always the ones I drop tiers or cancel entirely.
It just bugs me when a lot of the oens that survive are generic. And, in one case, even when a dev who cancelled a specific VN didn't leave the medium entirely, they'd dropped a really interesting idea in favour of a much more generic one.
As for books...
I listen to audiobooks. I will occasionally read written books, if I'm bored enough. And I have recently got back into reading comics & graphic novels. But I mainly listen. On my commute. Whilst doing household chores. Whilst in the bath or shower.
So, going from an in-progress VN to having to wait what'll likely take at least a year or two for a release in my preferred format to just go back to the beginning and have to wait for the plot to catch up to where I'm already at?
Yeah, no.