> Sometimes the YouTube video is more helpful than the private tutor.
University lectures work like that. First the general lecture, which has 300 students and is not interactive. Then the tutorial, where students who want extra help can consult individually with a TA. Attendance for tutorials was typically much lower in my experience, because a lot of students thought the lecture was plenty and wanted to spend the time on something else.
Why are you convinced that personal tutors are so much more effective? I'd expect the average student to be slightly better-served by having a personal tutor, but not by much. After all, personal guidance is available from TAs when necessary—my point is that it typically isn't necessary.
Nonetheless the 99th percentile lecturer is still better than the 50th percentile tutor in most cases.