The Rotten Tomatoes score of a 76% Fresh rating and 75% Audience score suggests that most people did like the show (if you don't like Rotten Tomatoes, here is Metacritic). And I acknowledge that the completion rate is an important metric as well, but they have too narrow of a window which defeats the purpose of On Demand vieweing as I mentioned in another comment.

Agreed that the completion rate factors in and those are numbers that are not widely shared, but it is another example of their unsustainable model. The window for their completion rate is too narrow. The whole point of streaming is that shows are On Demand and you can watch them whenever you want. And people obviously tuned in for 1899. Because they didn't finish quick enough should not necessarily be a reason to cancel the show, otherwise the whole On Demand thing is pointless.

No. Netflix is cancelling shows because its management is too full of itself while reigning over the other streamer services and is making very poor decisions.

That's understandable. But it used to at least give its originals three to four seasons with the chance to wrap up its storylines. Now it is pulling the plug pretty quickly after one or two seasons.

As mentioned above, if Netflix is budgeting shows at levels that require nearly unattainable viewership, then they have an unsustainable model and they are making poor choices with their programming. We saw this with The Sandman. It spent three weeks at Number 1, six weeks in the Top 5 and had a one-week high of 127.5 million hours viewed. Yet Neil Gaiman was telling people they needed to keep watching to assure it got a second season. How is a run like that not considered a huge success?

No misunderstanding. Here's the quote:

We have never canceled a successful show. A lot of these shows were well-intended but talk to a very small audience on a very big budget. The key to it is you have to be able to talk to a small audience on a small budget and a large audience at a large budget. If you do that well, you can do that forever.

1899 was expensive to make. But it also performed better than the average Netflix top performer. So it was successful and did not have a "very small audience". If it was so expensive that it required a run at Number 1 for multiple weeks, then Netflix is greenlighting shows that are not sustainable, and that is on them.

Warrior Nun performed a little lower than the average Netflix top performer, but that show is less expensive to produce and the viewership should have been in line with expectations.

It's no conspiracy, it is just poor and short-sighted decision making by the executives of a company that is too full of itself. Netflix is now acting very much like the broadcast networks in the days that they ruled television viewing.

The Netflix Top 10: https://top10.netflix.com/tv.html

I have compiled the numbers going back to September 2021.

That includes originals and acquired shows from the English Language and Non-English Language Top 10s. At some point, I will probably try to narrow that down.