PositiveThe Financial TimesReaders on both sides of this debate will find plenty of food for thought in Brad Stone’s The Upstarts, the most detailed investigation yet into the early years of these Silicon Valley prodigies. It’s an entertaining and well-crafted account ... The Upstarts reveals two companies that exhibit a similar strain of ruthlessness ... one disappointment of this book is that the reader never learns how it ends: their stories, of course, are still unfolding ... Although Stone avoids drawing moral conclusions, the material he has assembled in this book adds up to a careful character portrait of both Uber and Airbnb. Read it and you will be able to judge them for yourself.