In Nazi Germany in the 30s, all the Jews had their money locked up in Germany. Bankers allowed people to launder their money out, but would take a haircut of 10%, 20%, 30% which progressively grew to 90%. At that point, nobody wanted to leave!

-- an excerpt from the Saylor Series Episode 2 - the Rise of Man through the Dark and Steel Ages, its 2-minute version can be found here https://www.2minutebitcoin.org/blog/saylor-series-episode-2-the-rise-of-man-through-the-dark-and-steel-ages-robert-breedlove