Domains are a human interface model, so at a human level they have their value. But the web/internet (call it what you will) is an entirely different scenario, and will advance on regardless. IPv6 will bring a new distribution model to market owing to the much greater addressing potential. Today, if something is beginning to fail in your house, you'll notice it and look it up on the internet. Tomorrow, there will be loads of things in your home with thier own unique IP address within designated IP blocks. You'll be getting an automated email offering you price & delivery from China because some server knows your kettle is on the way out. Domains will at some point or another peak, it's a fact.