I remember when the reunification started I firmly believed that the East would quickly get up to speed once the Western system was applied there. It should be easy and the Easterners would be happy. Turns out that progress was slow despite enormous investments and the Easterners didn't really appreciate that the West completely ignored things that Easterners actually liked (their "achievements" = "Errungenschaften" was a big word).
When you consider how difficult the process was/is despite East and West Germany being very close culturally it becomes clear that things like "fixing" and "democratizing" countries like Afghanistan and Iraq are pretty hopeless endeavors. I don't think as Westerner you can even remotely understand the culture and the fact that maybe the people there don't want Western culture.
Some West germans still look down on Ossies, even though Merkel was one herself. It's a lot like how northern states look down on southern states in the U.S.
The cure for this is immigration, but the people that remain in the rural areas are very right wing and very xenophobic.
https://www.google.com/imgres?imgurl=https%3A%2F%2Fvoxeu.org...
"Average Wage in Germany by County
Notes: Average daily wages obtained from a 50% random sample of establishments via the Establishment History Panel (BHP) of the Institute for Employment Research (IAB). Real wages are expressed in 2007 euros valued in Bonn, the former capital of West Germany, using county-specific prices. East–West border is drawn for clarification; there is no border today."
TL;DR: at the 50th percentile, net worth of west germans was ~40k in 2012 vs ~14k for east germans (in euros).
IIRC the discrepancy between population share and elite share for Ossis is even worse than for American blacks.