Forbes has a nice story about the history of WordPress and the role the open-source software plays in the for-profit business Automattic. The article at one point says:
Automattic has an idiosyncratic workplace. As a legacy of its open-source roots its 120 employees are spread across 26 countries and six continents. Although most work alone at home, each team–usually made up of five or six people–has a generous budget to travel. “All of the money we save on office space, we blow on travel costs,” Mullenweg laughs. Groups have gathered in Hawaii, Mexico and New Zealand. Once a year everyone meets for a week at an accessible destination with a solid Internet connection. A distributed workforce means Automattic can hire talent from around the world–without having to offer the perks and pay of Google, Facebook and Apple.