Great point! I would say the same about the "alpha" economic city in any rich country. Think about Paris, Milan, London, Amsterdam, Brussels, Madrid, Lisbon, etc.: The same rule would apply.
Berlin has a lot of English speakers because it’s been a cool place for young people to move to from across Europe for the last few decades.
> Berlin isn’t the alpha economic city in Germany though. There isn’t really one, but it’s more like Frankfurt.