Amazon is a leader in the Retail field..Forbes stated that Bezos is the richest man of the world at the moment...and the secret of Amazon success is that they always try to do anything by themselves for themselves..indeed i have heard that Bezos is planning to start its own shipping company to help Amazon shipments to be more reliable and efficient...if i now think about Amazon adopting cryptocurrencies in the future i can tell that they will do it for sure and like always the will use their own Amazon coin...but i am not sure if this will happen in the very next future.