This is overly cynical. I agree that in general cooperation is very hard, and if things can be solved by a private entity, that is a good strategy. But the world has united behind causes before. A good example is the hole in the ozone layer. The world identified CFCs as causing this problem, and united behind the Montreal protocol. Now, the hole is shrinking and is expected to be closed by mid century [1].

I emphasize this because international cooperation is important to solve many problems. Let's not misrepresent the situation and pretend it's impossible. It has happened before, and we would do well to make sure it continues to happen.

[1]https://www.epa.gov/ozone-layer-protection/international-tre...