Sarah Leonard writes: “Twenty-three years ago, computer programmer and writer Ellen Ullman noticed a change in the internet. In a lecture at the University of Vermont in 1999, she observed that between 1995 and 1998, it went from being a “private dream,” which one might experience in moments away from “real life,” to a site of extreme individualism, in which companies attempted “to isolate the individual within a sea of economic activity. Ben Tarnoff’s new book, Internet for the People, makes a striking intervention. “The internet,” he proposes, “is broken because the internet is a business.” What if it weren’t?”