It's kinda weird how Dalio has been predicting a fall for a while now.
I don't have anything to go by for this, but I do wonder if there were any people who predicted the downfall of the Roman empire 200, 100, 50, etc years before it actually collapsed. I suspect all of them would have somehow based this on its decadence and excesses, but I also suspect none would have had a firm grasp on how it would play out.
I am similarly interested with such questions wrt to the US today.
With so many near death experiences actually death was challenging to guess at.