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They were scammed. The exchange rate of the Ostmark to the DMark was great for consumption, but made etern businesses unsustainable. They were then bought up by sleazy investors for a pittance.
You can say about political liberties in the GDR what you want, but domestic production was actually really good over there.
That’s a very distant phenomenon and more a result of the economic misery the east Germans have been experiencing for the last 35 years than a yearning for socialism.
Also, the east was targeted for neonazi agitation by westerners after the wall fell.