The real world is not some dystopian SF ruled by cool kids wearing shiny armor. The world's economy is still run by people consuming goods and services, creati

The real world is not some dystopian SF ruled by cool kids wearing shiny armor. The world's economy is still run by people consuming goods and services, creating demands - declining population is not an insurmountable problem but it does pose a huge challenge for any nation's economy. Fewer people -> fewer sales for Ioniq and Galaxy S -> less money made by these companies -> less money available for industrial research -> worse technology for your servers, drones, military satellites, submarines, whatever -> lose the war.