Biggest benefit of cash-free economy not mentioned in the article: escape from the Zero Bound in conducting monetary policy (https://en.wikipedia.org/wiki/Zero_lower_bound). It can't be that central bankers in Sweden aren't realizing this; Sweden's central bankers have always been a notch above performance-wise.
But this also assumes that the zero bound is a problem for monetary policy. Personally, I believe it is a feature not a bug to have a zero lower bound.
