Because the problem of resource consumption initially appears to be a subset of the problem of resource allocation. You are generally not permitted to consume r

Because the problem of resource consumption initially appears to be a subset of the problem of resource allocation. You are generally not permitted to consume resources that your peers have not agreed to allocate to you, and there will be much wailing and gnashing of teeth if you do. Therefore, if resource consumption is occurring, some set of resource allocation strategies should already have been agreed upon.