All I can do is guess: for most German professionals, that'd be within 5 years of getting out of college anyway (Germans usually start college at 20 or 21 and it takes 6 years, typically.). It's possible that given that, anyone younger than 30 was still seen as a "new hire" rather than "a career person". Since I started there when I was 22 though it was rather a disappointment. It might have kept me around longer, since after 4 years I wanted out -- but might have stuck around for that break at 5 years, and then who knows afterwards.
