Programs cannot anticipate all questions or needs. Instructors are still required to help decision makers analyze the best set-up for their environment and to guide students who are unable to orient themselves to the training they need. Multi-media training is enormously scalable. Once developed, a multi-media course can be duplicated for a few dollars. The amortized cost of a multi-media workstation is a few dollars a day.
Support is minimal.
Most students like multi-media courses better, and most score higher on tests after shorter exposure to the material. The same quality course can be delivered consistently. Modifications to course material are easy with modern development tools. Video productions, however, are expensive and skill is required to produce a multi-media program to know what should be and what should not be shot. Much of the cost of delivering multi-media training is fixed.