Terrifying power? Amazon has succeeded by getting customers what they want, and doing it cheaper, faster and more conveniently than their competition. Of all the tech companies to be cynical about, they most obviously make people's lives
better, and expanding their reach (along with the "ancillary benefits" of giving people access to the internet...) is a moral good.
Really, this knee-jerk paranoia is difficult to understand. If Amazon stops serving its customers well it'll go out of business. If it pisses people off it'll go out of business. If it tries to break the law it'll go out of business. It has limited power -- effectively none compared to any kind of government -- and no ambitions, incentives or clear paths to acquire that kind of power.