Im not sure that bitcoin can replace dollar soon but i know that bitcoin will rise and increase its value every time, but if the bitcoin replace bitcoin it will be a good news to all bitcoin holders for sure in that time bitcoin is an hundred thousand dollars value, bitcoin can replace the dollar but not 100%
Soon is not the right word, because although it can, it will take dozens, or even hundreds of years. If bitcoin can survive that long, maybe bitcoin will exceed the dollar, or even exceed it. But as you say, but not 100%