You are right of course,except remember that this line of thinking is part of what got us into the War with CivFr.
Of course we feel entitled to all the spoils of War, but we must be realistic. The mighty lion knows that the hyenas and jackals and vultures will come and pick at his newly killed carcass even while he is eating it. He may chase them away, but they will come back while his back is turned. This is to be expected, and while don't want other bystanders reaping our spoils, we must be prepared to either destroy yhrm to prevent it, or be happy to just let them take what scraps they can.

Of course we feel entitled to all the spoils of War, but we must be realistic. The mighty lion knows that the hyenas and jackals and vultures will come and pick at his newly killed carcass even while he is eating it. He may chase them away, but they will come back while his back is turned. This is to be expected, and while don't want other bystanders reaping our spoils, we must be prepared to either destroy yhrm to prevent it, or be happy to just let them take what scraps they can.