Nothing needs to be anything, though the world order would certainly look different and reflect the interests of different classes of people than today
No. But, in the absence of NDAs and other agreements for both employees and external partners, you'd see a great deal more limits on sharing information both within and without companies to a strictly need to know basis. Certainly those limits exist today to a degree because NDAs basically just allow for consequences. But if you can't keep someone from turning around and sharing anything you tell them other than through some sort of mutual trust, you'll be less inclined to share it.
Seems like looking at this from a class perspective only complicates things further?Poor people often have secrets and can be pretty vulnerable to attack if they're disclosed.