If you re-read the early cyberpunk scifi from Gibson and Stephenson, one of the characteristics of their vision we're still missing is execution at the edges. There was a strong concept of "my virtual space" in which space owners control not just a visual presentation layer, but the full execution stack.
Our architectures are still dominated by central server farms, in which we give up our data and cede control to the server operators. There are few experiences where we have a true, decentralized experience with execution controlled by the clients. BitTorrent and it's predecessors are the closest we've come so far, but AFAIK it's all limited to peer to peer file transfer.
Every time I start to explore these thoughts, the browser is the obvious platform for the first iterations. I'm glad to see initial designs appearing, and look forward to seeing a truly decentralized and peer to peer service that don't have critical dependencies on central servers.