This can potentially create a stable income stream.
We can create a platform on which tutors can charge students lessons fees and our platform will take 5% admin fee or something.
My brother does tutoring for living and he told me there is a lot of people in Japan who would love to take private English lessons.
The subject could be anything and I am sure there will be plenty of people who would do so without money (This is not tutoring but I have weekly pair programming sessions with my partner - there is no money involved. But my American wife told me once if she were teach English she would need to get paid!)
But I think this could be an attractive “baseload” business