But if Viacom wanted to make a TV series based off of Star Trek XI, they probably couldn't for legal reasons.
Right, so there's only one entity that could make a TV series and there's only one approach that it likely to result in a TV series that can survive - to latch onto the fanbase created by the movie. There's no other fanbase that can support
Trek on TV. Whatever rights needs to be negotiated to make this happen, those will be negotiated. That's what corporations do.
If they want to let their petty feud keep them from making money, then it's their loss. I certainly can find other things to watch on TV. But corporations always have personnel turnover and what motive do the new folks have to continue a pointless feud vs. making $$$ that can secure their career in an industry notorious for lack of job security?
I disagree that any new series must cater to the audience of the new movie. Will they be strongly taken into consideration? Of course.
I don't know what the difference is between "cater" and "taken strongly into consideration." The upshot must be that the TV show keeps them watching by giving them enough of the same essential things that they liked in the movie. It's already a given that they won't get everything. Spock and Kirk on TV as a regular basis is probably not going to happen if Quinto and Pine become big movie stars.
Alternative options could be, as I mentioned earlier, a show that retells Kirk's early days with another new cast separate from the movie (in a deliberate move by CBS to steal Viacom's thunder).
They could do that if they please, but they'd be idiots. That would confuse people who'd seen the movie and nobody else is going to care. They've already tried making
Trek on TV for the existing audience - with ENT. That failed. Where are these new fans you're assuming exist? Why didn't they watch ENT?
Rather than do some nonsensical version of
Star Trek, CBS is far more likely to just stick with police procedurals. Why try something risky that is likely to fail in lieu of something known and safe? If CBS is going to bother with
Star Trek at all, they are going to do the safest thing, which is to capitalize on the international success of a big hit movie.
And keep in mind that the market
will be international - being able to license the show overseas will be a huge inducement to doing the TV show. That audience is even less likely than Americans to have heard of
Star Trek before they walk into the movie theater. The movie's job is in large part to create the audience for
Star Trek which has largely withered away.
Why do we need a specific time period at all?
Just to keep history, technology, and the introduction of species into the story (Klingons first, then Borg, then Dominion) orderly. The time period could be solely behind the scenes and never mentioned on TV, but it should be something longtime fans can deduce. Some degree of consistency needs to be maintained, even if canon gets futzed with somewhat.