The short statement did not only declare the realization of a rookie team's creation, but also formed a border that indicated the Association's judgement to secure the dungeon as their own.
Individual teams and managements outside of the Association existed.
Although the Association held the most power, they couldn't trigger the small communities either.
Those small communities helped the nation survive outside of the Association's reach.
The Association couldn't stretch their hands to every dilemma, so it was a given that other entities would sprout out of nowhere, possessing certain gifted and talented people that strove to protect themselves without being under the Association.
They helped to solve cases that escaped their radar. It was profitable for both them and the Association, so a consensual peace was made.
The only linkage that existed was the Hunter status.