I think defaulting to encryption is great for businesses. A friend who does security policy for a big corporation is always complaining about data egress, and c

I think defaulting to encryption is great for businesses. A friend who does security policy for a big corporation is always complaining about data egress, and closing even one vector would help. And within the corp you control the MTA and MUAs, so you could at least secure intra-corp communications. To him, leaking info to a competitor or the public is a bigger deal than the NSA.