Whatever's next is just user-level PKI and DNS. Can I roll a private/public key pair and use it to authenticate everywhere as the user BabyFarkMcgeeZax? Can I

Whatever's next is just user-level PKI and DNS. Can I roll a private/public key pair and use it to authenticate everywhere as the user BabyFarkMcgeeZax? Can I authorize Spotify to BabyFarkMcgeeZax/playlist? In theory, I can use an OAuth provider for this kind of stuff, but then who owns what? Why can't I host my own content wherever I want and allow different permissions to it? Why can't I delegate certain things to some provider and revoke it when I want? How does anyone get paid for being such a service provider, especially with the idea that the data is host proof in some cases and thus can't be monetized? Blockchains / tokens are trying to answer this question. Most are data that doesn't fit on a blockchain or are issuing tokens with arbitrary monetary policies and following them up with bad fiscal policy. Thus far most of Web3 just requires some algebra to see a database that doesn't solve these problems.