This was because many shoke, similarly to the employer's household, maintained their territories, their castles as residences, and their vassals and kept their independence from their employer's household to some extent, and this relationship was not a strong one between master and vassals, but, in fact, tended to be more of an alliance with the head of the family as the alliance leader.
それは、庶家も主家同様、領土と居城、家臣を養い、主家から一定の独立を保った者も少なくなく、主君と家臣という強固な主従関係というよりは、事実上、宗家を盟主とする同盟関係という性格が強いものであったことによる。