It becomes sort of like the dystopian future imagined in William Gibson's "The Peripheral" - most of the human race has died off, but technology has advanced so

It becomes sort of like the dystopian future imagined in William Gibson's "The Peripheral" - most of the human race has died off, but technology has advanced so that the elites can self-sustain anyhow. Big cities are haunted with holograms running scripts of people going about their day to make them feel lived in.