First off, let me say that this isn't meant as critique. I'm not following any stories that does this at the moment and I know next to nothing about writing and publishing ones work. This is just genuine curiousity.
I get that you might want to wait to release your story until it's done. That way, you won't get stuck writing yourself into a corner or losing your inspiration halfway through, disappointing your readerbase with a half done story.
I get that when you release a story chapter by chapter as you write it, you can take feedback from your readers and make adjustments that you might not have considered otherwise.
What I don't get is when you have finished your story, but still release it chapter by chapter. Surely, if this was efficient alot of real publishers would market their books this way, but you don't see that happening. From my own experience, I know that I haven't read some stories that have done it this way, because at some point I feel like saving up a bulk of chapters to read, and then promptly proceed to forget the story altogether after a couple of weeks, and if I finally remember it again, I have to either start the story from the beginning, which might be daunting depending on the stories length, or I will be lost continuing from where I left off.
I feel like there's nothing to gain from trickling out one chapter after an other if you have a finished work. I read in some authors blog post who did this, something like "I'll release this story 2 chapters a week, that should hold you over for a while, while I work on my next project." I don't agree with that at all, don't they see that not only might there be people like me who wait for multiple chapters or a finished story that simply forget about it while waiting, or even more importantly, it hurts the flow of their own work. You know when you read a really good book, get completely immersed and binge-read it in a single sitting? That's completely impossible this way, and interrupting the readers immersion by forcing them to wait days for a new chapter can be really off putting and hurt the quality of the experience by chopping it up rather than let it flow.
Like I said at the top, I don't really know anything about writing, this was just some showerthoughts, and it made me curious to what writers that do this actually gain from it. It's not that uncommon here I don't think, so there must be something I don't see right?