Imagine warring tribes.
There are two types of arms dealers. One says, "Buy these weapons, up-skill your soldiers to use them, and wipe out your enemies." The other says, "Buy these weapons, train your commanders to use them, and get rid of those pesky grunts who demand to be fed."
The only way the second dealer's customers can survive is if there are no arms dealers of the first type, and everyone ends up in a forever stalemate spending the food money on weapons.
Yes this is comical.