For several years after Amazon was founded, I was a Jeff Bezos skeptic. My line was that for Amazon to compete with Wal-Mart, Amazon had to master logistics. For Wal-Mart to compete with Amazon, Wal-Mart just needed a web site.
To my surprise, Amazon was able to master logistics before Wal-Mart figured out online sales. And along the way, Amazon was able to master cloud computing as well. It is a remarkable story.