Comment by jillesvangurp

One thing that is specific to Berlin is that increasingly bars and cafes are staffed by foreigners. This is a quirk of the German employment system, a scarcity of staff, and the wide availability of expats in need of gigs. Instead of hiring permanent staff and paying them a salary, it's less risky to have temporary workers. However, you can't do that endlessly with the same people in the German system. You would have to employ them after a while. However, there's a never ending stream of students and other expats flowing through Berlin willing to do that kind of job. So, lots of bars and cafes employ those instead. Also, there are a fair amount of expats that stay in Berlin that open their own businesses.