I must be missing something in your argument, because if countries can spontaneously reduce consumption without coordination, doesn't that solve the problem? Y

I must be missing something in your argument, because if countries can spontaneously reduce consumption without coordination, doesn't that solve the problem? You say "No civilization has ever voluntarily reduced resource consumption", but civilisation as a whole has not needed to before. This is the first time I can think of that we have faced a global existential threat - or at least one we can do something about.