If you notice the news' reports the last few weeks, there is a growing war against Bitcoin.
Central bankers cannot tolerate a decentralized system that actually frees humanity from their criminal enterprise.
I do not think governments are going to ban Bitcoin absent an incident, only because it is a black eye to any government to stifle technology.
What I suspect could happen is that another False Flag terrorist event involving the transfer or use of Bitcoin could cause the US or the EU to severely restrict and/or regulate Bitcoin to the point where its use is eliminated.
If a false flag is not used in the immediate future (year or two), then governments may pass super strict regulations to protect the international bank cartel and the institution known as governments.
We all know that governments cannot stand a system independent of the system.