They will move to New Zealand or make Hail Mary effort to colonize off-planet, and then war and famine pick off the 5-6 billion people that the earth cannot sustain (absent massive changes). Some of the people at the top know about this (in the country you are referencing), and they don't care. This is why they are attempting to systematically take apart health care, education, means of disseminating information, and other pillars of a resilient civic society.