Amazon makes only 1% in does it survive?

How does a company like Amazon survive?

In 2014 Amazon pulled $349 million in net profit on nearly $75 billion in revenue, less than 1% in profit on gross revenue. Most of their capital is being spent on expansion and Prime shipping.


How do they do it? 

Matt Iglesias, Slate writer says:

“(Amazon is) a charitable organization being run by elements of the investment community for the benefit of consumers.”