https://en.wikipedia.org/wiki/Allied_plans_for_German_indust..."The reduction in steel production that resulted from the first and the second level of industry plans meant that a steel production bottleneck ensued which forced other parts of the German industry to fall below their own permitted production levels. The economy of the Bizone finally hit rock bottom early in 1948 as a consequence of this.[21]"
It might have looked like a swift turnaround on the politics, but if you influence economics, the system behaves very physical, meaning, bottlenecks propagate, and effects ripple.
For most Germans i guess, the contrast of the war economy (which always felt good, due to wealth of whole Europe being fed into Germany) - and the aftermath, with refugees and year long food shortages was quite stark.
I guess all other nations have a prolonged history of suffering with the start of WW2 and slow improvement after the end.
Spilled milk under blown up bridges over long dammed rivers.
Whats way more interesting is the question of prevention. I actually propose the idea of Extremism-Vacacination. Controlled Synthetic extremism is introduced, in a controlled environment and the lectures are really learned.
Its quite similar to the approach i always suggest to transmitting live-experience from generation to generation. Usually advice is not really taken or valued, until the same mistake has been repeated.
Take scam-prone investments, for which every generation falls again and again. Now imagine a service a father/mother (or grandmother/father) could hire, that would scam the kid, and retransfer the funds upon lesson learned. Such a lecture, though also painful, would be less prone to do all the damages the real scam would do.
Problem is, behavioral vaccination is not legal.