You make it sound as if there's no Trek stuff out there, which is just incorrect:
http://www.thinkgeek.com/interests/startrek/
But on communicators, specifically, it looks like in 2009, Nokia did put together a prototype. The sense I got from the reviewer in the link I gave upthread, it seems like perhaps Nokia didn't find it economically viable, for some reason. Note, specifically, that they did a piece off of Original Trek communicators. Abrams' Trek, unfortunately, have communicators that don't really fit the mold for a phone at all. They don't have a single screen, but have two separate round elements on the face, one of which gets covered by the flip-cover, the other which doesn't. I'm guessing they felt the result wold look less thoughtful than not doing one at all.