In other words, the more people respect "zebra crossings", the less drivers have to worry about driving 15 bloody mph in some residential area cause the folks there see no problem in just jumping across the street.
What the German example shows us is that: if we all abide by the rules -- with no exceptions -- we can all have nice things.
(like driving your Porsche @150mph on the freeway cause we are actually adults)
Some might call that an environment for progress and innovation :)