Government also make their transactions so transparent. It would be easy to identify the right party. Bitcoin should replace bank's place in future.to less people know about bitcoin and hard to understand for some people and im sure one day the would understand and change to more good things just like bitcoin..
I think it would really take more time, maybe years from now or we might not see it anymore if it happens, banks are everywhere and fiat is in there, and fiat runs the economy, so if it will make banks disappear, where will we put our paper money...so I think it is far from happening at this lifetime.