In fact, the part of the resources that the Immortal Sects were retaining were not merely for themselves. These resources were meant to compensate those in the Golden Core Stage who had perished in battle.
Although it was true that the Eastern Wasteland had overwhelming advantages when they invaded the West Cool, and they only engaged in that one battle, there were always casualties in a great war.
All the major Immortal Sects had members in the Golden Core Stage perish, only not many had died.
These experts had died, but they may have had spouses, children, disciples, and others close to them. Naturally, the Immortal Sects would compensate them.
As for the remaining resources, the Immortal Sects allowed the returning disciples to distribute them among themselves.