> The same goes for Dropbox- 2GB for every user, for free? While it was a contributing factor to Dropbox success, it was hardly the most important one. 2GB was

> The same goes for Dropbox- 2GB for every user, for free? While it was a contributing factor to Dropbox success, it was hardly the most important one. 2GB was perfectly sustainable even back then if you consider than only a fraction of users would use all of their 2 Gigs. It's the overall execution and the focus that mattered. I'd also guess that aggressive affiliate marketing helped quite a bit too.