No I do think this can happen in my opinion this is highly unlikely but we will see what is gonna happen of course because the fact is that its not to predict.
The banks are controlling the world and they have a lot of power that is why I do not think the bitcoin do it.
to me i think bitcoin is not here to make banks disappear. banks depends on fiat and bitcion cannot make fiat disappear, therefore banks will stay tell fiat exist. and to me i think there is still more time so that bitcoin become a regular currency and all the people of the world start using bitcoin as fiat currency.