bank lives in fees of transaction, bitcoin is not.... yet.
thats why bank feels bitcoin is a threat.
both are good because it's necessary for our real life but for online transactions Bitcoin more good currently because fastest and low fees
but bank also good for secure our real money
Maybe in the future, employers will offer us to get paid in bitcoin, whether it be the full amount or just a certain percentage, to our discretion.
if major companies indeed offer their employees to get paid in bitcoin whether it's in full or partially, then a lot people still need to convert it back to fiat at some point as they have bills to pay. you can't pay your mortgage in bitcoin. you can't pay your health care and other insurances in bitcoin. if it was possible to pay bills in bitcoin, then more people will not convert it to fiat, then they will directly pay their bills with bitcoin.