So all that's left for Star Trek for the rest of it's existence is Kirk and Spock reboots? I doubt that would be a financially sound idea.
Seems to work for properties like Superman, Batman, The Avengers, Spiderman, The X-Men and so on...
People seem to want to assign some type of importance to the spinoffs, that somehow because they existed Star Trek can't go on without them. Which is simply false.
Kirk, Spock and the Enterprise are the core elements of Star Trek. General audiences like them and it would be silly for the studios to drop hundreds of millions of dollars into something that would simply be trading on the Trek name.