As Dennis points out, STID made way more money overseas than any other Trek film has ever done before. That, more than anything else, is key to the franchise's health and future.
Star Trek is more popular now, in more places, than ever before. No amount of ill-informed fiddling with budget numbers can change that.
Sadly American $ are worth more to the studio's bottom line, than international ones, that's just a fact of life, sure you can open up in more markets like China but still if your US gross is declining like it did with Into Darkness you need to make a lot more $ elsewhere