IT IS HARD not to be in awe of Amazon. It is one of history’s greatest companies. Jeff Bezos nurtured the firm from the humble online bookshop he founded in 1994 into a tech juggernaut, selling everything from corn syrup to cloud computing, a future trillion-dollar industry that Amazon more or less invented (see chart 1). Today it is the world’s fifth-most-valuable company, third-largest revenue generator and second-biggest private…