Earlier quoted context omitted.
Don't we kind of have Paradigm 2 on our smartphones and tablets? It's not perfect but it's something.
We should replace DNS with DHT, then we can have content addressable (or otherwise verified) apps sideloaded or loaded in chunks from anywhere like in BitTorrent or Dat. To me, the Browser is the most widely distributed sandbox runtime ever! It’s just missing a few crucial things we plan to add soon :-)
It can be used to update itself, too :-)