Watching lectures such as this and those in my own field I have often thought that college professor/lecturer is one of those jobs which don't have much of a future.
By that I mean that there is no reason for 95% or more of university faculty to exist. Why attend a lecture on linguistics by a comparative nobody if you could tune into a lecture by (the young) Chomsky? The future is for a very small number of great thinkers and teachers to dominate. Imagine taking a course on HIV with one of the men who investigated the disease from its first onset in America in the 1980s--people like Robert Gallo or Robert Redfield. Or a course on English Lit with Heaney when he was alive.
There is no limit to the number of students such people could have. Most lecturers/professors would become redundant, though a small cadre could be kept on to do tutorials, mark papers etc at local level. That model is perfect for English speakers, a little more complicated for students who don't know English, though increasingly English is becoming the lingua franca at third level internationally.
Prof. Steve Keen is trying to earn a living by putting his economics lectures on patreon, because universities don't like what he has to say about the future of the so called Global economy.