Statamic is both a content management system (in that it has a nice, responsive, client-friendly admin area for managing content) and a website-building platform (in that the admin area is completely optional if you're someone that's comfortable with writing content files, and you can fully create and maintain a site easily without it). A license gets you the software itself and allows you to run it on one domain.
At the moment, there's a folder where you place all of your content files. I've seen people play with syncing that up with systems like Dropbox and even maintaining that folder as its own git submodule. There's no ability to do that automatically at this time, but I bet someone could figure out how to make that happen.
It seems out marketing message could be a bit more direct in that instance, certainly noted!