Amazon is a (brain dead) predator:
In the same sense that at vampire is a predator. Their strategy in practice (in the longer term) destroys the market they are exploiting*. They are a bubble company. The moment they are required (by circumstances - shareholders, the authorities and the like) to show a (sustained) profit then they are in the shit up to their necks.**
*The only world a vampire understands is one where he is last of his kind left standing.
**Oh and yes, I am perfectly well aware that there are plenty of other examples of BigCorp out there who deserve the same critisism.