Complex sentence: They are intensely hostile to any and all life that is not under their direct control-other life represents competition for resources and space, and the concept of sharing is so completely alien to Prime immotiles that it simply doesn't exist.
Split into simpler sentences: They are intensely hostile to any and all life that is not under their direct control. Other life represents competition for resources and space, and the concept of sharing is so completely alien to Prime immotiles that it simply doesn't exist.