A moment of enlightenment! Welcome to our world, SOTE.

Yes, treaty tribes get one half of all harvestable fish resources in this state. It is their legal and binding right to do so. A relative handful of folks are entitled to half the fish resources, while the masses are left to divvy up the other half. On a per capita basis, you can see the tremendous allocation disparity of a "common" resource. Now you can see why non-treaty users get all bent out of shape when the treaty allocation is exceeded.

EDIT: And yes, they sell most of that harvest.