Except as pointed out in the article, the massive increase in spending was fairly frivolous. They spent crazy money on a new huge office, threw big parties, and sent their employees traveling everywhere. They also doubled their headcount, when I think we can all agree that they haven't had a surge in volume or features that merits that many new employees.
There's no reason that GitHub couldn't be run profitably if they weren't just out there burning VC money as quickly as possible.
There's no reason that GitHub couldn't be run profitably if they weren't just out there burning VC money as quickly as possible.