Well there are 2 billion internet users - i.e. individuals. But each individual has multiple functions. E.g. I have a dropbox account at home, and had one for

Well there are 2 billion internet users - i.e. individuals. But each individual has multiple functions. E.g. I have a dropbox account at home, and had one for work. So did my boss, and some other coworkers. So while there are 2 billion internet users, there are many organiztions - profit, non-profit, ngo, etc - which makes the pie even bigger.