The business of Air Power is bombing enemy assets - manufacturing, transportation and troop/armour concentrations - and thus reducing their ability to fight. It's all about bombers and moving the mud. Air supremacy helps those fighting on the ground or sea by keeping them free of enemy air attack, but its main purpose is to enable one's own bombers to go about their business unhindered. Some folk have ethical objections to bombing, but warfare isn't ethical. It's all about winning.