Bitcoin is the future. Does it solve the underlying problems of inequality providing utopia land? Possibly not. However, it solves the constant devaluation of currencies by governments all around the world. The world financial system is built to ensure a specific few groups of people get richer and more prosperous. That stops! Period!
bitcoin as a currency is not meant to do either one of these. it can't fix the "inequality" because it is not equipped to do so and the inflation issue that exists with fiat currencies doesn't exist in bitcoin just because of its controlled capped supply but that is only a very small thing compared to what bitcoin really offers.
bitcoin is meant to address the centralization issue with currencies. so it provides a censorship resistant global payment system that is also fast and secure.
Simple. I do not expect amazon to allow bitcoin. However, I expect bitcoin to be used in other parts of our lives in the next decade
they all will adopt bitcoin eventually but first people have to stop wanting to ONLY hold their bitcoins and wishing for its price to go to the moon to make them rich!