The reason capitalism cannot work well is that it assumes endless resources and infinite growth, not because people don't like electronic transfers. Capitalism is failing in all countries and those that are not are already transitioning to some form or another or post consumerism.
Sure at the "end game" stage you are correct. But on the way to that stage it does what it does really well, meaning it makes lots more capital.
De Soto is talking about why it "cannot" get started in a place without government controlled land registry.