My point is that FF and INS hurt the box office turnout of TUC and NEM, but it is only one factor in those sequels ultimate success.
Well now you've lost me, because while TUC would be considered a success based on several factors, NEM was a complete failure based on other factors. But both were films made after a previous flopped film and both were billed as the final films of the series.
And honestly, I don't really believe that the success or failure of a film depends on the film that came before it (i.e. if the previous film was a failure it will cause the next film to be a failure.) Especially since Star Trek '09 came after Nemesis, and it was a complete success.
Or maybe I'm just not understanding your point.
...Or maybe I'm not explaining it right. Usually, I will not go out of my way to watch a sequel if its predecessor sucked. I can't believe that I'm alone on that. So IMO, both TUC and NEM would've done better at the box office had FF and INS been better movies. I'm just saying that they took a hit for it, not that it was the only reason the numbers landed where they did.
And I wouldn't apply that logic to ST09 since it was obvious to everyone, even nontrekkies, that it was a shiny, brand new thing.
Full Disclosure: At the time of their release, I personally did not punish the Trek franchise for failures (though FF pushed that rule to the limit).
Having said that, I am now old enough to realize that the only the Corporate Man will listen is when the consumer speaks with his wallet. Into Darkness got my automatic contribution because of ST09 (despite all my complaints about the reboot aspect, I still thought it was a solid movie). However, because of my disgust with ID, I will likely stay away from the movie theater for ST: Beyond.
I am just speaking as a jaded customer that has the balls to put his money where his mouth is. So at the very least, I can assure you that Beyond will at least take a $10 hit because of ID's disappointment; I can only hope I'm not alone.