I feel for you.
I lived in Germany for a little while a few years ago. It has a very conservative culture when it comes to career paths.
My (German) girlfriend was quite talented in the area of hospitality management, but found it very difficult to get a job in hotel management due to not having her degree in the field (she'd had great marks in her international business degree though). Self taught skills were regarded negatively compared to a degree in the field.
In Australia, I'd worked as a journalist for the largest magazine and newspaper publishers in the country, and was training RHCAs and RHCEs for Red Hat, despite having neither a journalism nor computer science degree.
My girlfriend's mother never really understood how I could either not have gone to university, or changed careers. I doubt they'd understand why anyone would leave a job for a startup with a high likelihood of failure either.
When I read your post, I was reminded of a similar article about Asian students, who despite high marks, often exist in a culture that pushes them away from the unknown.
There are, however, always exceptions. Best of luck.