Poaching is what insecure groups and/or cults are afraid of I do assume. If your group of allies/friends/cultists were so united and sound in said doctrines then poaching would never be a problem. Its just like a cult(religion). Those (wo)men who call themselves (wo)men are so scared and lack the faith in their words and practices that they would respond with threats and/or violence, but they are nothing more than worms hiding in a shell of valor.
Henceforth if there be a alliance that's against poachers than that alliance is weak and you should jump to the nearest alliance that offers you what you are worth.
So says I Rokula the Eternal Fascist, Thrice Prince of Africa, the Americas and Suomi.