It’s probably not the whole story, but having tropical locales in which to film your marketing materials (which is often videos of yourself, these day, for most

It’s probably not the whole story, but having tropical locales in which to film your marketing materials (which is often videos of yourself, these day, for most or all of the categories you mentioned) can be part of selling your image as a smashing success, which is very useful if your spiel is “pay me and I’ll teach you to be as successful as I am!” Lower cost of living probably also helps if you’re not as successful as you’re letting on.