Are MOOC Primarily a Source of Cheap Post-graduate Professional Development Education?

A recent article in the Chronicle of Higher Education reported research information on students in MOOC. Among other things ... it was revealed that the majority of students are males; the majority already have college degrees; and the majority live outside of North America. Apparently, for many of the students MOOC serve as an inexpensive way to get post-graduate professional development education. If so, then the MOOC are doing a great service to these students. The professional development-based demand for MOOC could help assure that MOOC stay available to regular undergraduates ... those who do not have an existing degree.