Link to originalBiological systems are incredibly robust as a whole / will survive even under extreme changes of external conditions.
Currently, artificial / silicon based systems are not yet capable of (physical) reproduction. Hard to pack a lithography machine onto a robot. That’s what makes them vulnerable, long-term.
Structural systems would just lack the intelligence to survive.
What about ant-like systems? Many simple, dumb bots, but with emergent intelligence? … Ants at their core are also made up of cells, which have the ability to reproduce! (Easy to take that for granted)
Reproduction is at the core of biological systems.