While this is definitely a possibility (and no doubt one of TPTB's goals) I think it is easy to underestimate the resistance that would arise when actually implementing such a change in Europe, USA or other "democratic" countries. Just like we are starting to see large scale demonstrations in these countries against corona restrictions (e.g., Berlin and London yesterday), demonstrations against implementing a cashless society would be tremendous (obviously I don't really know; this reasoning rather stems from personal experience and from reading newspaper articles about this topic). A comparison with e.g. China, in my opinion, is therefore difficult as its socio-historical culture is much more amenable for implementing such changes.