These giant facilities are in a sense humanity's artificial "exo-sensors", an augmentation of our ability to perceive and understand the Universe. They are cost

These giant facilities are in a sense humanity's artificial "exo-sensors", an augmentation of our ability to perceive and understand the Universe. They are costly in comparison to resources accessible to an indvidual but still manageable when done collectively by large countries or country coalitions. Its not clear when and how competition can be a plus in this space. If the core technology is similar/known it may make sense to just pool the widest possible international resources and build the largest possible thing. But there is also something to be said about competing teams taking calculated risks with exploring new directions.