It could happen. Maybe it has started already. Christina Farr on how pervasive YouTube videos have become:
People have livestreamed giving birth and broadcast their face-lifts. One video, which shows the removal of a dense, white cataract, has gone somewhat viral and now has more than 1.7 million views… When the University of Iowa surveyed its surgeons, including its fourth-year medical students and residents, it found that YouTube was the most-used video source for surgical preparation by far.