I, on the other hand, am underwhelmed.
Their AWS services is a pretty cool tech and business.
But as for their other stuff:
1) Their core business (the store) barely makes any profit. Their profit margins are razor-thin, and until recently operated at a loss IIRC.
2) Their ebooks and music store are ho-hum.
3) Their hardwares, Kindles (Fire and plain) are simply loss leaders for content sales. Which (1) is not that profitable in itself anyway. Not that difficult to sell stuff like readers and tablets at a cost or slight loss.
Anything else I forget about?