[norenh]

I would argue that the main reason is that we are stuck with a centralized Internet with a somewhat large initial step to start a new service. If everyone get IPv6 we are all able to be a first class citizen on the Internet, meaning I can run a webserver or whatever from home. Once I am ready I can move on to a hosting provider with all the extra costs and hassle it comes with. Without IPv6, we are stuck with a two tier system of Internet users. Basically consumers and providers where the step to become a provider is larger than when you can simply start from home with whatever scrap you have in your garage.

IPv6 will also simplify a lot of things (being able to scrap NAT (note, you will still need a firewall) and avoid protocol issues for End-to-End services) but that is just a bonus.