"A decentralised, trustless future perhaps?" I think we need a DNS-like service that simply hold small encrypted blobs, just big enough to contain an IPv6 addr

"A decentralised, trustless future perhaps?" I think we need a DNS-like service that simply hold small encrypted blobs, just big enough to contain an IPv6 address. When you "add" someone to your list of contacts, you are giving them the key to decrypt the blob that you update with your IP.(Complications ahoy here but this is the basic idea.) That way, people can message your phone/computer-of-choice direct with whatever E2E protocol you want. No middleman. Then you need an app layer built on that to manage messaging, video calls, group chats etc. But that app layer could be open and free. People often like some XML based protocol from the 2000s, but as long as it is secure - whatever.