The Four is an overview of Amazon, Apple, Facebook, and Google, briefly covering the past, present, and future of each. The most insightful parts for me were the details on the business philosophy of luxury brands such as Apple.
Fun book with a lot of insights for running a retail business. Sam's 10 rules for running a successful company include general business, leadership and management principles relevant to most fields. Related fact, Sam Walton's three living children are currently ranked 16, 17 and 18 on Forbes World's Billionaires List.