Originally Posted by Canuck_in_Japan
They're not paying for Dropbox, they're paying for the millions of people who use Dropbox.
They already have AirDrop. When not exactly the same, Dropbox compete in a similar way but using Cloud and with no operating system limitations. Dropbox is even available for Linux, with or wiithout GUI.
I don't use Dropbox for confidential data, but it is convenient.