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.
Have you even looked at it? Access is easy - just sign up. There isn't yet a comprehensive degree level program with it as it is rather new, having only been created less than 2 years ago.
As for classroom teaching, they're still working out the kinks. San Jose State did a test of the Intro to EE course and found that having the students get together and go over the materials in groups let to more of them passing the classes.
That said, the elite schools - MIT, Harvard, Penn State, Cal Tech, et al. will still be around 20 years from now. The high cost private schools and lower tier publics are in for a world of adjustment.