Some comments on here assume ViacomCBS corporate cares enough about to whom the licensed work is contracted to that they would make the call to terminate the existing contract. It's possible, it does happen, but we just have no evidence for that at this point and it would not be as simple as some are claiming here. If ViacomCBS no longer owns a publishing arm, I'm not sure why they would step in and cancel a contract, then turn around and hand it to someone else who does not have the same history of working with them on publishing novels. It would be an odd choice, as someone who has actually worked for a corporation and then had my division sold off, our contracts continued and nothing like that was done. Now, when that contract comes up, who knows, but for corporate to step in like that would be pretty strange and not as easy as people in this thread are making out.
And to be clear, an "integrated storytelling" event wouldn't really be an issue one way or the other, considering the other parts of the licenses (comics with IDW, rpgs with Modipheus, etc) aren't in house or connected to each other either. They would just coordinate with the various partners, much the same way Star Wars does with it's different elements. Also to be clear, "integrated storytelling" doesn't mean canon. Even if they call it canon, like some did Countdown, it won't be. Again, I think this argument comes from not understanding how Star Trek tie-in media has functioned for 50+ years now, and naivete when it comes to how it functions for other brands. As much as Star Wars claims "everything is canon now" we know this isn't true. The Last Jedi contradicted a couple of things from tie-in media before the new "canon" was even 5 years old.