But how much an economy still relies on cash varies a lot per country. Every time bank or payment discussions come up here, I'm surprised by how primitive US banks still are. A few decades ago, my parents still had to pay the down payment of their house (f30k I think?) in cash. It makes sense that some countries are more ready to move to a completely cashless economy than others.

Whether or not that's a desirable development is a whole different and interesting discussion, of course. For tax and anti-fraud purposes, it is. For privacy not so much.