Sounds like the Club of Rome was enamored of Isaac Asimov's Foundation series:

> "The Club of Rome asked an even more intricate question: how would social and economic forces interact in the coming decades? Where were the bottlenecks and feedback mechanisms? Could economic growth continue, or would the world enter a new phase of equilibrium or decline?"

The problem is, as systems grow more complex they often start to demonstrate sensitive dependence on conditions, eg with tiny variations in inputs to one node of the system resulting in wild swings in outputs from that node. Equally problematic, nodes in a complex system can change their connectivity to other nodes if conditions change enough (think of a breakdown in trade between nations due to wars, natural disasters, diseases etc).

The ideal systems to depend on are stable (not hypersensitive to small forcings, with predictable behavior) and have consistent structure. They can still be complicated but should fail gracefully back to simpler structures under stress, eg an emergency power supply for electricity at a hospital that normally relies on the grid.

From this perspective, our electrical grids are well-designed systems - not given to huge power fluctuations - that will nevertheless need major expansions and improvements if electricity demand keeps rising with data centers and eVs etc. However, expanding the grid isn't adding fundamental instabilities, it's just modular addition in the same pattern as the existing system.

In contrast, the USA's current financial-monetary system is not that stable, predictable, or reliable. All kinds of fundamental instabilities exist, and wild swings in behavior under pressure are expected - and since everything else relies on it, eg you can't update the electrical grid without capital input, you risk avalanching catastrophes by relying on such an unstable system.