[borroka]

To make money from "coaching," one must either sell through the Internet, thus potentially reaching thousands to millions of people, or sell expensive individual 1:1 lessons.

This bifurcation has been observed, for example, in jiu jitsu, where the most profitable business opportunities are selling "instructionals" via DVD/digital download to thousands of people for over $100 a piece, or selling 1:1 coaching sessions for over $300 an hour. Owning a gym/teaching 150-200 students (kids + adults classes) may give a decent salary, but certainly not wealth.