There's the matter of taking what had been very strongly analogue, that is, analogous, forms of recordmaking and turning them into mediated forms: static images, audio, and video. But that is merely a regression to the status quo ante of preindustrial times. The magic of photography, tape, and film were that these, more or less, faithfully recorded what was before the lens or the microphone. We're returning to a period that bears more in common with the age of human testimony, at least in terms of its level of mediation. That is: you have to trust in the testifier. The distinction in the quantity (and detail) of the images presented is not as in earlier times.

It's the fact that communications cycles and volumes are so much greater though that reduces the reliance on trust, in ways I'm starting to suspect are more substantive than is generally appreciated.

There are several histories of corporate communications, where this trends appears, to an extent. James R. Beniger's The Control Revolution (1986 or thereabouts) and JoAnne Yates, Control Through Communciation (2005) are two of which I'm aware. The role of trust isn't central to either, but it's touched on.