Innovations are who and what we are as human kind. We will advance and trip over each other with each apparent theme or phase.
Web 2.0 or Web 3.0?
It makes no difference if you are unable to carry an audience, your public, your students. Whether they pay for it, or it is free. It comes down to the ability and enthusiasm of a group of people, sometimes the charisma of an individual.
I see learning environments rise and fall on the ability and availability of a single person, some systems flourish and expand - others wither.
Can one person duplicate and transmogrify into a dozen or more parts? Can others pick up on their enthusiasm and replicate it?
The technology is not a panacea.
It makes of us a village, a community ... then we must behave as if we are in a village or community, which in turn requires that we know how, when and where to contact people and who we are dealing with.