I'm not fuckin' legally bound to a profession because of my ethnicity or religion.

Grandfather was a factory worker. Mother was a factory worker. I'm a clerical worker.

As anyone with a parent in a specialized trade can tell you, having connections and a ready educator is a huge advantage in getting into that trade.

Banking requires capital. Guess what families tend to pass down?

Family businesses, and professions, were MUCH more important in the pre-modern age.