i wish i knew how to program games like these so i could just take everyones money and make them wait 6 months or more just for a 3 min update. im just saying there alot of games and they put updates out every few weeks.
These games take longer than you may imagine! Just setting up ONE SCENE and then rendering it can take hours, let alone content that lasts a long time. The more support they have, the faster they can update (unless the dev decides to spend his time with "higher quality" content, which honestly annoys me). If they have very little support, than they need to keep their job to pay the bills and so, far less time to work on updates.
My advice to you is to create your own visual novel, just a short story to start with different images for maybe, two different routes, dialog etc. And get a taste for just how long it takes. I have. I am creating a visual novel that may never see the light of day, just to do it on my own for shits and giggles. It is time consuming! I had some time last night and so I managed to finish ONE IMAGE I was working on. Just setting it up, the right clothes, the right poses for the hair, body, eyes, mouth, hands etc... making certain it all matches previous scenes and it is inline with the story you want to tell, then adjusting the camera settings, focus, depth of field, making certain you have everything you want in the scene. Then setting up the lights etc.. etc... etc.... takes time. For a quick render you're doing just for kicks, not a problem. Still takes time though. For a visual novel where everything has to be consistent, that takes time. Then you render it. If you want a high quality image (which I think is a waste of time), than that render may take an HOUR or longer depending on your hardware.
Do what I do,
play other games while you wait! There's a lot of 'em out there, or make your own, I'm sure you can do it faster, right?
Of course, if you're not the one paying money, than why do you care? If you are, than stop if it bugs you. Can't complain when it's free! The people that are paying, obviously think it is worth the wait, and it is thanks to them than you get anything at all.