You're 100% correct and the replies to your comment are missing the point. People can have whatever complaints they want about the equality of encryption etc (and maybe those are valid, I don't know), but your point still stands. People here seem to be missing that when you're dealing with enterprise customers, their primary concerns are security, compliance, etc. So yes, running a company that sells to enterprise gives you a very different perspective from what you'd have running a consumer media company. Whether that helps FB I have no idea, but that's a separate debate.
How it helps FB is that it is trying to expand its market into business software - aka using Facebook Groups and FB Messenger, on your own shard. It competes with Slack and other similar worksplace IM systems. Drew Houston's experience at Dropbox is greatly helpful as Facebook tries pushing harder into that market.
