Because they mostly have a proven track record of advancing human well-being? As do other corporations from railroads to Amazon. Sure, they are not perfect, but

Because they mostly have a proven track record of advancing human well-being? As do other corporations from railroads to Amazon. Sure, they are not perfect, but the governments you advocate should kneecap them (to echo your other general comment) have a track record of ruining it, /especially/ when they try to decide what's "fair/unfair". You are defending a much larger, more powerful, vastly more evil and harmful entity.