The DoJ is opening antitrust investigations into some of the biggest tech companies around, including Facebook, Google, Amazon and others. This is nothing that either the public or the companies involved should fret about. It is part of the evolution of the tech sector. We’ve been through this kind of thing before. Each economic era follows a similar trajectory. A disruptive technical innovation arises, many companies quickly emerge to take advantage of it, and a long process of dispersing the innovation throughout society takes place.