I'm with Fandyllic, I don't understand why Paramount kicked PRO from their own streaming service. Cancelling their end of production, I can understand, but also kick it off their own streaming service, where it could still bring in the maximal amount of revenue for them, no matter how small, and without having to split it with a third party? To me, it genuinely sounds like Paramount's passing up what profit they could get from the show, for reasons I don't really understand.
(...though the thought HAS crossed my mind that Paramount did it deliberately so to try and artificially increase demand for the show...and if so, it might be working...)
Further, Fandyllic's also got a point about how Paramount+ is supposed to be home for the entire Star Trek franchise, but it's not actually if it's missing even one show. And this is important because The Animated Series is on Paramount+...and I kinda suspect PRO would be making more profit than it is, so...
Further, one of the big appeals about streaming from the start was that it was a place you could watch all of your old favorite shows that were no longer airing on conventional networks, providing a chance for their respective studios to still be earning some profit off of them even well after production on them had ceased...and why wouldn't Paramount want in on that? Particularly when they're already doing exactly that with probably more shows than I could list?
Whatever the reason, I'm sure part of it boils down to internal politics. And who could ever make sense of that, am I right?