The eldest son must train, and the second son cannot remain idle either. As the eras continuously evolved, the colonial governor management model of the Overseas Colonies increasingly fell behind the times.
Just look at the Spaniards' colonies and you'll understand, they're now in turmoil. Although the intervention of external forces plays a role, a significant factor is the ruling method not keeping pace with the times.
The colonies of Shinra are still stable, mainly because Franz enfeoffed a batch of Nobility. There's a group of fellows working for themselves, suppressing all kinds of disobedience.
There's no doubt, this feudal rule is even more backward. Its only advantage is that it can inspire subordinates' working enthusiasm, maximizing the development of personal potential.