Why Dropbox Needs Composer to Succeed to Become a $100B Company

Personally I'm really excited about Composer. So many implications...

- What does this mean for Evernote? - Can Dropbox pull off a new product without prior traction? Mailbox seems to have generally worked out OK, but what's happened to Carousel? - Will messaging inside of Dropbox a valuable angle on collaboration and if so, will anything happen between Dropbox and Slack? - What will this mean for Dropbox's relationship with Microsoft? - Who will Dropbox acquire next? They have files, mail, notes...seems like a modern Exchange.