The true meaning of the trilogy

I just realized something: you don't need a sophon to raise suspicion. Nor an interstellar message to witness the destruction of a system. Liu Cixin wrote a metaphor for our world, about how big fish are willing to dry up the sea and shrink in size just to destroy the potential danger. Perhaps it's obvious, but it's a eureka moment, and at the same time it terrifies me that I didn't realize it sooner. .