ANYTHING that can be taught in a classroom is now available on-line.
I have a relative who is a teacher (and very, very liberal) who was complaining that pro athletes make millions but teachers make so little. I told her when they can take the top few hundred teachers in the country and have them teach every student those teachers could make millions like pro players while the other 99% would make the same as rec-league basketball players (i.e nothing). With the internet that can happen now.