Maybe a child has a learning disability. Many of them own their own businesses and have employees with PTSD, grief and other problems. Maybe they are influential in a large corporation and readily recognize how your non-golf services could help the executives and other employees in their company. Maybe they want you to work with their sales personnel to reduce their fear of rejection and thus boost sales. This list of possibilities can go on endlessly.
Golf tends to be an affluent sport and, in some country clubs, the affluence is extreme.
With golf your results will be irrefutable because it all comes out in the score. The numbers don't lie. They are undeniable. No one can debate your effectiveness, especially when you do it with 5 to 8 out of 10. Don't limit yourself to just one golf course, however.