Amazon's Hidden Profit Engine

Amazon doesn’t make most of its money selling products.

That statement might sound wrong at first. After all, this is the company that ships millions of packages every day, the one whose boxes have become a permanent feature of American doorsteps, the one who is at my door three times per day. 

But spend a few minutes looking at where Amazon’s profits actually come from, and you’ll find something surprising. 

The retail business — the ...