Those products do not offer 'the human touch' that full-motion video provides.
Video provides a much richer, more enduring and repeatedly used learning avenue for end users.
Even then, ongoing questions had to be directed to a help desk. Carmelo Lubrano, director of Legal Computing for Seton Hall University School of Law said that seeing is believing. This product is going to be incredibly useful for network administrators, like myself, because it decreases costs, administration time, and end-user help desk calls. With a video streaming product like this, training and support can be done anytime or anywhere. More importantly, it has minimal impact on the performance of the network.