Are there really? How many of those newcomers promptly forgot about the whole thing ten minutes after they left the movie theatre?
Most of them.
For that matter, how many newcomers started digging and found out the older stuff is better and now couldn't give a crap out JJ's version?
Very few of them.
Answer: You don't know, and neither do I.
Educated guesses are perfectly possible. Most people walk out of movies and forget what they saw. They have more important things to do with their lives, like start thinking about the next cool movie they want to see.
But we should get a hint when (or if) the next movie finally comes out.
The next movie will do just fine, and its success will say nothing particularly useful about whether and how to get
Star Trek back on TV.
Star Trek on TV needs to be created to fit the channel it is airing on. The audience must be built by the marketing campaign, which, like all new TV show campaigns, will have a heavy component marketing to current viewers of that same channel. Those people, not Trekkies, will be the primary target audience for the campaign because they are the easiest to reach (other than Trekkies, who don't need to be reached - they will find the show on their own).
Therefore, the show had better be something the viewers of that channel would want to watch. Trekkies will find the show and watch it anyway and then bitch a lot about it but keep watching. Viewers of the channel the show is on will tune out if they don't like what they see.
The awareness built by
Trek XI will help some, and tying the TV campaign into a movie release would be a smart idea, but nobody is going to depend on the movie to create or maintain awareness for the TV show, which will need to have its own independent audience-building campaign. This is particularly true because of the unusual situation where different corporations are involved. CBS is not going to rely on Paramount to sell its products (or vice versa).
If CBS is not going to market the show, they're not going to make the show to begin with. They're not stupid enough to invest money in a new show and then do nothing to sell it. So you can assume that CBS will handle the audience-building job, and that the show will be calibrated to make that job easier. That's the way it always works, so why should
Star Trek be different?