Bitcoin very much has the potential to to take over all banking systems in the future, bitcoin is still in its infancy and has a long way to go before it can really take over all banking systems. What that means though is that right now is the perfect time to get into bitcoin.
Bitcoin is the future of banking. It shows a lot more convenience in the transaction than what the bank now does. It is also because of this that the bank also sought to fight Bitcoin because they have not found a way to exploit it effectively. Bitcoin will give users more autonomy than banks.