“Narconomics: How to Run a Drug Cartel” is for anyone interested in how to succeed in the illegal drug trade. It’s also for anyone interested in how to run a business. Were it not for the “narco” theme, the book would be a generic management title. Tom Wainwright, the book’s author, finds that drug lords have the same issues as legal business executives: personnel problems, shortages of raw materials, and tense relations with government regulators (perhaps an understatement). The narco business is a business like any other.