The fiat system will no longer exist with the system base on debt, developed countries are technically in bankruptcy a nation cannot be sustainable with a system base on debt.
The crypto revolution is something that will be an astonishing accomplishment and replace the power of printing money from central power. this new generation will not use fiat money anymore and will have tokens in many wallets from the decentralized world
Actually what will happen in future, its very difficult to say. any thing can happen at any time. But it is sure that if everywhere use cryptocurrency, the slow banking system will disappear. People will not need to go bank for their daily works. They will do their work more easily from any where any time with more firstly.