It's incredible that Amazon was able to build such a moat in the early days. Logically, you'd think that somebody like Sears (which became a huge company in the

It's incredible that Amazon was able to build such a moat in the early days. Logically, you'd think that somebody like Sears (which became a huge company in the first place by offering the convenience of shopping from home!) would have made a big early investment in online shopping and become gigantic.