The situation on Far Shore Island where everyone is unified is a result of being blocked overseas by Fifth Energy Level powerhouses from the mainland, due to extremely harsh living conditions—an exception among exceptions.
The best example of a truly self-sufficient Fifth Energy Level is actually Duke of Solin.
The Deceased Monarch who killed everyone in his dukedom and turned them into soul spirit materials.
"If everyone were like Duke of Solin, Terra might as well be destroyed sooner."
Even though Ian knew that, in a certain sense, Duke of Solin also wanted to protect his people from the war between The Empire and Fiery Flame Land, he still mocked, "One powerful solitary beast after another rampaging this land—one arm of the Milky Way Galaxy isn't enough for their destructiveness. By the way, Terra has too many Fifth Energy Level beings, but the places are too small. The Ring World plan must be carried out."
