The pressure on writers, musicians, artists, and others in the creative class to work for free has been building for some time now. The British journalist James Bloodworth sees the crisis as breaking down in distinctive class terms. A columnist for the International Business Times UK, he is all set to release a book called “The Myth of Meritocracy: Why Working-Class Kids Still Get Working-Class Jobs,” a book that turns in part on the way unpaid labor is often required of people who want to enter professions.