To replace the dollar in the near future is certainly very difficult, I'm sure that bitcoin can not replace the dollar because of many factors that affect, for example is a decentralized issue that is difficult to accept legally.
- I assert that bitcoin will not be able to replace the dollar because bitcoin is not accepted anywhere in the world, not everyone knows about bitcoin, even in the future, if bitcoin is accepted, I believe people are still not widely used, it's just a place to invest, it can not replace real money. Especially here is the dollar, it belongs to the country has a very strong economy in the world, the US government has always supported and maintained their currency, if bitcoin wants to replace the dollar, unless it has the capacity to beat US, and this can only happen in imagination. US is the strongest country, wanting to beat them, this is not something that can be done