I suspect something like Udacity (on which classes rae not free and there are more structures 'degree' programs) has far higher completion rates, since it's not

I suspect something like Udacity (on which classes rae not free and there are more structures 'degree' programs) has far higher completion rates, since it's not reasonable to just impulsively sign up and then stop. That is certainly true for something like Georgia Tech's OMCS. I still think the hype was justified in that stuff like OMCS is legitimately the future of education.