Of course it's a huge possibility for Bitcoin but I fear things are more complicated than bank buildings. First, Bitcoin should be accepted as legal tender and companies start paying their employees in Bitcoin.
Bitcoin does not need to be acknowledge as legal tender but as mode of payment is enough to use it by companies to function as payment to service or goods.
But still it must be acknowledged by the state that bitcoin has become a legal means of payment, but now it is still very minimal, some countries still refuse bitcoin as a legal means of payment, of course they will defend their local money, a company will certainly follow government regulations, so if it is illegal any company would not dare bitcoin as a means of payment for services or goods.
Bitcoin should also be accepted pretty much everywhere too. Otherwise, I doubt this is going to work.
Reason why adoption is needed and with lots of people being unbanked, it is an opportunity to extend its network and use case to cover these unbanked individuals.
Keep going back to the government if they reject it no matter how big the community is that expands bitcoin then it will be difficult to adopt, we just hope something changes where bitcoin can be adopted.