I do not think that it would be possible for Bitcoin to be able to replace money because Bitcoin is pretty new and they could not handle that many people.
Replacing money is on a other level and Bitcoin needs to stay in its own lane.
Bitcoin is already a money, so it no need to replace it but I think bitcoin will not replace Dollar soon because there are a lot of people that is still using Dollar so you can replace it now around this time but of course there will be a time that it will replace Dollar but you dont know what kind of money because you are not sure if Bitcoin is doing well in the future.