At MIT, EdX is now the big thing.
But that, like the Kahn academy, is not replacing classroom teaching entirely, which I suspect is why MIT still even now has classroom teachers, Thus it goes back to my original point I made above.
In any event, it seems like short term this EdX is rather tough to get access to anyway, which may explain why at the moment, out of all the thousands of universities and colleges, MIT is the only one with regular access to it.