My impression was that Amazon does make plenty of revenue — it is just that all of the "profits" simply gets reinvested into Amazon? Is that too naïve? My thought was, hey they found something useful to do with that money. (Funny how I don't see Twitter that way. I think they could/ should cut their spending by something like $1B a year.) I'm of course comparing Amazon to apple which makes so much money that they can afford to keep it "cash" as opposed to reinvesting.