> I don't think online education is a good start or even a viable model
Let's suppose you open-sourced education, so rather than it being controlled by an elite and passed down to the masses in varying degrees depending on how much money the recipient has, it's controlled by everyone. People can design their own courses in the same way you make a Linux distro or other open source project. Courses could be stored somewhere like Github and downloaded, forked and merged like we currently do with software. Suppose people taking those courses could contact the developers or their helpers if they don't understand something, or just want to discuss it -- email, Skype, Slack, etc. So many people want to learn, and so many others (like me :) would be happy to help them if there were the right structures and support systems to make it possible.
All these things could come together to become something far more than just "online courses", just as open source software is so much more than software you don't have to pay for. Imagine we're at the Apple II stage of online education, but the iPad version (30 years down the road) will be unimaginably cool and powerful. Let's just imagine a world where you expect people to be educated to a decent level, just as we increasingly expect a base level of computer literacy. You're right that the infrastructure is not there at the moment, but let's not get hung up on that -- it will spread and increase, so what good things do we want to follow it?
If online education stays where it is, you're right -- it's not good enough. But, respectfully, I hope you're wrong, and we're seeing the start of something extraordinary, the next phase in the democratisation and distribution of knowledge. I hope universities start to look more and more like museums, and education becomes a lifelong endeavour for everyone: learners, teachers, and all points in between.
Personally I think this would be a tremendous thing for PG&Co to research. Hopefully, we're just getting started :)