It may cross cut the Banks share market value in Finance and world share market. But I dont think so It will replace the bank completely.i think bank will follow the technology current and maybe in the next generation there will be banks that receive bitcoin, so it can make people to have an easier transaction
I also think that after the Bitcoin is accepted by the state, the bank may also set the relevant business processing window.
For my opinion this is not as what may banks dissappear for but make some other way also on how this may improve for i am agree on it for that it was makes a lot of good things for.