"The unguessable tokens are supposed to be cheap and ubiquitous, where DNS names typically aren't." Just to clarify, you are referring to the commercialisation

"The unguessable tokens are supposed to be cheap and ubiquitous, where DNS names typically aren't." Just to clarify, you are referring to the commercialisation of domain names, the DNS run by ICANN, not an inherent property of DNS per se. I run authoritative nameservers at home, including a custom root.zone. I create names whenever I neeed them, so I still think of domain names as "free", in theory. Only ICANN domain names carry a fee. (In the very beginning they were free.)