I agree. The real danger is software monoculture. We need many diverse systems with very different attack surfaces. Less standardization. That's the way nature survives. We just need to learn the lesson.
Nature also has things like immune systems, but you get into very sketchy legal territory there. Our legal system have not caught up with this new interconnected reality.
Oh, and nature very frequently suffers all kinds of systemic collapse. Nature isn't immune to this.