BTC and domain names are totally different. All bitcoins are equal, but all domain names are not. sex.com is worth more than mydirtydog.com. Then everybody can use BTC whereas my parents would not know what to do with a domain name. Also owning a domain is not anonymous, there has to be one registered legal owner.
I mentioned that as a difference in the original post.
I think it works the same as an asset class in the aggregate. Owning a bitcoin is a share of the aggregate protocol while a domain is a specific destination within the protocol.
The comparison holds true in big picture terms. For any speculator buying bitcoin to hold, studying the appreciation of domain names in the aggregate is the closest thing.
Countries issue bonds and pay bond interest in sovereign currency; central banking systems are set up in sovereign currency; taxation power backed by force and property seizure is denominated in sovereign currency; legal contracts and disputes are adjudicated in sovereign currencies. Sovereign currencies are accepted by all merchants within their respective nation states. So currency and bitcoin are totally different too.