Top banks of the world are coming up with their own coin, they will rather use their coin as an international means of exchange than use bitcoin.
Then OP will be very diappointed as this not going to happen the next several decades.
Banks and governments always will come with a new scam and Ponzi where they will make sure to have the control over the money supply.
Bitcoin most exist and grow beside that fraudalent system!That it it's only chance.People must realize themselves that fiat currencies and the actual financial system only exists to oppress the majority of people.
With Bitcoin they have the possibility to choose!Something like that never existed before.