So then Amazon is not a success either?
More importantly, Amazon could have been profitable for much of the time. Amazon was losing money because they were taking the profits from they successful ventures and pouring it into new ventures.
With Uber, what change do they make right now to switch to a very profitable company? Amazon had that option, Uber does not.
If there was a machine where you could insert a 20 dollar bill and it spit out the 20 and an additional 12 cents, would you not use that machine?
How much would you pay to buy one?