“That means that such children must do _hard_ work, including _hard_ physical work.”
Even the British Royals send their young men into the military to get their minds right. American “royalty” not so much.
The most important lesson the inheritors of wealth need to learn is that they are _not_ better than the average person, and arrogance is absolutely _unforgivable_ and will bring them nothing but disaster.
Most wealthy Americans were never taught that lesson.