It only needs to get a lot bigger these days!
For me, I don't think bitcoin can do that as banks are very important in an economy of a country. And we all know that bitcoins are uncontrollable.
Government will tend to use banks rather than the use of bitcoin, since value of bitcoin is unstable.
And in every aspect, banks are important even though they are just getting money from it's client legally.
Agreed - banks play too big a role for bitcoin to replace and BTC has issues that prevent it from being more widespread (large fluctuations in price, susceptibility to hacks, etc.)...but i think bitcoin will supplement the role of banks.
Yes that's true, bitcoins can't make banks to disappear instead of making it disappear. It can just be adopted by the bank and use it also for their
banking services. But let's reverse the situation, banks can make the bitcoins disappear in the country with the help of the government.