^^^That doesn't quite follow. First Contact did well, but the next film they made was Insurrection, which didn't fare so well. I think they went bigger budget with Nemesis because they had a director and screenwriter with enough clout to make it seem like a good idea.
First Contact was made for 46 million, a (comparatively) low budget film that made tons of money. a lot higher then a lot of the other films.
So they doubled the budget and had a bad movie, and Nemesis may have lost money dependent on the accounting (depends on DVD sales and so on.
In millions
Movie -- US Gross -- International Gross -- Cost
ST1 -- 82.2 -- 135 --35
ST2 -- 79.9 -- 96 -- 12
ST3 -- 76.5 -- 87 -- 18
ST4 -- 109.7 -- 133 -- 24
ST5 -- 52.2 -- 70.2 -- 30
ST6 -- 74.9 -- 96.9 -- 27
ST7 -- 75.7 -- 120 -- 38
ST8 -- 92 -- 150 -- 46
st9 -- 70.2 -- 117.8 -- 70
ST10 -- 43.3 -- 67.3 - 60
ST11 -- 257.7 -- 385.7 -- 140
Prior to DVD sales, A movie needs to DOUBLE its production cost to break even , and what studio seek is to break even after US domestic, so all overseas money (which sometimes does not break down 50-50) and DVD sales are profit. Star Trek, with the exception of ST9 (which most likely broke even or produced a small profit) and ST nemesis (which most likely is still in the hole in a major way) has been highly profitable. Even STV which was the biggest failure of the first six films did alright, just not the cash cow they where hoping for.
For a number of years due to strong DVD sales, a movie would only have to earn about half it costs in the US market. However DVD sales have been falling, which means you need to do better or cut costs.