I think you're absolutely correct, but I think the difference between "Home alone today" vs "Save private Ryan today" is, that when thinking about home alone, because the story is essentially time/context agnostic, they might imagine in being today, but in the save private Ryan it is specifically refering to 2nd world war, so noone would think about it being placed in today's world But yeah, I agree with you. I could totally imagine a big movie creator lobbying government(s) to hamper war-ending efforts, so they can film there authentically, if it was easier than to do it in a studio