Getting investors to give Bezos free money for being Bezos was actually pretty good for customers and got everyone free one-day shipping. Amazon is an investor charity like Uber, not a business.
We saw something similar in the 90s where health care prices plummeted as the now winners developed and convinced the public that their monopolies were good. Now they are able increase prices by 15-20%/yr into the foreseeable future.
This is not a prediction (per se), but a statement that we should realize that monopolistic might be good for the consumer in the short term but bad in the long term.