Also, as a separate comment, I understand the crazy appearance of Amazon's valuation but I think it's one of the most justified giants in terms of market cap.

Also, as a separate comment, I understand the crazy appearance of Amazon's valuation but I think it's one of the most justified giants in terms of market cap. They're positioning themselves as a monopsony for the modern world, even expanding into groceries and now, evidently, pharmacies. Imagine one company serving as an access point for so many of our goods, while wielding dubious control behind the scenes to extract profit and move vertically through the supply chain. It's easy to imagine a future where we simply buy the cheapest, reliable goods whenever in need, and end up with Amazon lightbulbs that power our Amazon TV stick, etc, etc, etc. It's scary to just see how many cities are bending over backwards to try to be the location of Amazon's HQ2. Their move with the Echo has gained them another critical access point in the future: smart homes. In the same way we require mobile phones for our apps, we'll require a hub for our IoT devices, preferably voice-activated, and that will be the Echo. It's hard to even sum up all of their advantages, but as someone who has competed with them in one industry before: it's a damn nightmare.