They really don’t understand us, do they.
The world cannot act cooperatively through communism because failures pile upon each other, disincentivising cooperative behavior and incentivizing selfish behavior. It never has worked and it never will work.
The only system whereby the world can act cooperatively is Christianity. The problem there is that not everyone wants to be a Christian. Even with that being true, though, the altruism from a limited number of Christian’s has beaten communism again and again.
Capitalism is a tool that libertarians tried to turn into a religion. Communism is a religion, Christianity is a religion. The battle is between Christianity and communism. Capitalism is a tool, and a great tool as long as you dont try to imbue it with supernatural characteristics. Christianity is not dependent upon it to exist so if communism destroys capitalism, it still has not won. It will be eaten alive by the Christians just like worthier Rome was. Sorry/not sorry to burst the Lefts bubble.