And it's not original to either of them, it's based on a book series.
If you were a TV watcher, I bet it felt like betrayal when the show went to online streaming. I haven't been a TV watcher since years started with "19", so I first heard about The Expanse when Amazon took it over (and were streaming the whole thing).
I think what Stargate SG-1 did was way more disingenuous. The first episode was R-rated with nudity, profanity, and violence to match. From the second episode on it was strictly PG. (The original Stargate film was PG-13.) So this was all a bit weird. (Nothing against SG-1, it's actually a fine series.)