I think a better metaphor is fermentation.
It happens naturally whenever the ingredients are brought together but in order to get a quality product you need ridiculous amounts of knowledge, process, and technology.
And even a tiny bit of the wrong bacteria can ruin an entire batch, but people will still drink it and go blind.
I think you are mistaking infiltration for 'getting spread out too far'.
Nearly all of what you describe can be most easily attributed to planted agitators.