How the Big Five Became the Biggest Companies in the World

In the year 2040, the biggest companies will be bigger than the United States.But for now, that's just how things are.That's the optimistic view, and one that holds a lot of promise for the future of business.The question, of course, is how big can the big companies really be?The big four companies -- Alphabet, Facebook, Amazon and Microsoft -- will likely keep expanding in a big way over the next...