Soulmancers aren't Dark Power Wielders. Whether it's hypocrisy or true righteousness, at least in public, they need a reason to engage in combat.
Just like Julian picking a fight with William just now, he first had to take the moral high ground and then engage in open and fair combat.
It is said that only in this way can one avoid falling into darkness on the path of power enhancement.
As Steven said, this region is vast, and there are only so many large Soulmancer organizations in the world. What is there to fight over?
If a real battle broke out, it would be bad for everyone.
However, these elites who have become part of the Soulmancer organizations are only giving face to Steven for now, verbally advocating for peaceful coexistence. But if they really discover some rare and exotic treasure, they would undoubtedly end up fighting bitterly.
The idea of 'first come, first served' doesn't exist!