I think this is really difficult because BTC is very difficult to replace fiat money and it can only exist side by side.
Yes,it is the progress of man in the future i think human power will be completely replaced by machine power
I think Uber will replace taxis in the future and it will grow strongly, in the future it will replace all taxis.
Amazon is popular and known by many people, but I still like to read books on mobile apps or books in the library because it is more convenient and easier to use Amazon.