Are you sincerely suggesting that even a handful of students choose their optonal classes by what they consider benefitical for them in the future, once they grow up? :) I've been working at an elementary school for some time now, and I can't emphasize enough how little the kids think about their future in terms of taking optional classes and such. Not a single student thinks that "Hmm, I'll take German now, because I believe I may need it in the future!". No. What they think is "Hmm, I've always been a big fan of Rammstein and German language so I want to learn it". I'd argue that only after people attend Universities and colleges at 18+, they really start thinking about their future and may actually plan their courses and classes based on what they'll (want to) do in the future.

Of course, when you think about this in the context of moving to Berlin after the rising startup scene, we're only interested in those who actually attend university, who care about their future, who study hard and so on. Such people probably start planning their future at younger age, aim for and dream about careers in the field even before other kids learn to understand what an actual career is. People with true ambitions are rare in general population, but not in the startup scene, I think this is something to be remembered.