There are few stocks that have been more exciting over the past few years than Amazon.com (NASDAQ: AMZN). Shares of the e-commerce and cloud computing giant have soared nearly 190% over the past three years, driven higher by unrelenting revenue growth and investor euphoria. The story that Amazon is disrupting a wide variety of industries, including grocery and logistics, has proven powerful enough to make investors forget about the company’s perennially meager bottom line.