I think it woulnt happened because bitcoin never replace fiat money. Its my opinion. Bitcoin is very good for speculation. But blockchain st all really good technology.
There are two different school of thoughts over this topic. One, we people arent accepting change and we dont let system changed. The other one is, time will take all the odds and thrown them out from history. So if we just talk over second one, I think we might be seeing a full felled bitcoin world that wouldnt be involved in dealing of any sort of fiat. Just wait and watch.