Comment No doubt (Score 1) 400
I know a guy who sold a script to a studio. Basically they took a clean script and in a series of six rewrites jammed in everything a movie "needs" to make money. Certain types of characters, a certain type of pacing, and merchandising. They stripped out any cultural references non-American moviegoers might not understand. In the end if it were soup it would be lukewarm and tasteless. He didn't care because he knows the business and he new better than to get attached (and they pay well), but they might have made a good movie out of the original. Nobody would bother with the rewrite (not that they actually made the movie).
So falling domestic numbers really aren't much of a surprise. The studios have a formula for making money on a world audience, so it's no surprise so many movies come out to be mostly the same.