What I don't understand about these acquisitions is how tangential it is to Dropbox's original value prop of being a "dumb" folder that would magically sync all of your files and stay out of your way. Now, instead of Dropbox passively running in the background and letting me do my thing, they want me to start actively engaging with the software.
I agree that it's necessary and overall a smart move, but still a very large and difficult pivot to make.