In 2011, Andreessen Horowitz co-founder Marc Andreessen wrote an essay for The Wall Street Journal called "Why Software Is Eating The World." In the article, he explained why his then-two-year-old venture capital firm was putting its cash in big software companies like Facebook, Twitter and Skype: "We believe that many of the prominent new Internet companies are building real, high-growth, high-margin, highly defensible businesses."