Sweden can switch to the use of non-cash payments because it is a country with a very high standard of living. Although I'm pretty skeptical about this opportunity and I think that in life there will always be situations where cash will be simply irreplaceable. Several more states can follow its example, no more. In general, the world has not yet reached the level of development where it would be possible to talk about the need for and the possibility of switching to non-cash payment, and especially the use of crypto currency.