As I understand it (at third hand, maybe, so deploy grains of salt), Bad Robot just prefers to keep all its tie-in material closely supervised and coordinated -- like having all the comics written by a single hand-picked person, say. And that doesn't really mesh well with fitting it into a pre-existing, sprawling novel continuity that an established group of authors has been developing independently for the past couple of decades. So it basically boils down to a difference in approaches. BR's better able to do things in its preferred way with a comics license than with a novel license, so that's what they focus on. (Not sure how STO fits into that. Maybe they were okay with it because it was a new continuity and they could get in on the ground floor. Or maybe it's just because Cryptic Studios,like IDW, is based in California, while Pocket's way over in NYC.)
Mr. Laser Beam said:
Especially since ST4 will apparently be the final Kelvinverse film.
I don't see any reason to assume that. Heck, until the fourth film was announced, most people assumed the series would end with
Beyond, and that was clearly an unwise conclusion to jump to. As long as the series keeps making money, they'll keep making more installments. If the actors' contracts run out, they'll renegotiate.
After all, Paramount only retains the movie license to ST as long as it keeps making ST movies. So they have an incentive to keep the series going. Sure, another reboot isn't out of the question, but it's hardly mandatory. Sony only rebooted Spider-Man the first time because their plans for a fourth Raimi-Maguire-Dunst film fell through, and the second time because their reboot bombed. It wasn't because some absolute, immutable schedule required them to do it. If Bad Robot walked away from Trek and Paramount couldn't convince the actors to sign a new contract, say, then they'd probably do a reboot so they could keep the movie rights. But as long as the cast and producers are willing to keep going, there's no reason the studio wouldn't let them.