The global pandemic might speed up the process of digitization by a bit, but its still a long way for banks to disappear the physical cash currency completely. Many national banks across the world are onto the idea of launching their own “central bank digital currency” also know as CBDC. It will still take the government at least 5-7 years to eliminate the use of physical cash to a great extent.
Complete digitization of the payment system may take 10-15 years. Dominos in some countries has stopped accepting cash as a payment method due to the ongoing pandemic scenario to avoid any type of contact even through paper money. So, that’s definitely a step towards digitization.
However in many countries where there is abject poverty it is going to be impossible to eliminate cash as those people will simply do not have the means to access online banking at all, however I agree that this pandemic is going to accelerate the process and bankers are not going to lose the opportunity to help themselves and recommend or even force some people to give up cash and use more digital transactions, and I know this is effective because even if I have always preferred to use cash now I have found myself doing a great deal of my purchases electronically.