HN user
I agree, but this is a more elaborate crime and demand an improved strategy/logistic.
I'm referring mainly the common "default" crime: a man with a gun robbing a shop and run with all the sweet money. It's far common in many countries although not so common in many other places.
It's quite different. We're talking about digital money, traceables transactions, improved security systems and so on.
I'm not saying that this will solve all problems, but will make things difficult for the thieves.
There is an important point to be discussed, that happens mainly in violent/poor countries: the frequent robbery (and it's consequences, like murders).
A cashless economy will help solve this problem that affects everyone, especially the poor (paradoxically).