Let's not mention, the value created by an advanced world itself counts as considerable income for a Divine King. At that time, losing an advanced world would be sufficient to deeply wound a Divine King's power. To prevent harm to their benefit, any Divine King whose territory is threatened will inevitably choose to resist.
Moreover, if at that time their territory were truly seized, it would be a disgraceful matter for the Divine King. Thus, to preserve their face, without any necessity, the Divine King would not allow such a situation to occur.
