Agreed that success is not guaranteed. The other two factors are context and success expectation. You can't win NBA MVP and expect to successfully go and sell

Agreed that success is not guaranteed. The other two factors are context and success expectation. You can't win NBA MVP and expect to successfully go and sell cookware (unless you are known for being a cook outside of the league) it is not what people trust you for. You also need to look at the size of the audience of your accepted expertise. Tony Robbins is known, but apparently not enough to float a primetime television show.