The obvious one is they are new to the game & want to start out with the correct fundamentals.
My second one is usually business or social golf. They only play in corporate or charity outings & don’t want to embarrass themselves, so just like the first reason, correct fundamentals.
The third one is a player that genuinely wants to get better, but is struggling with doing so. They are usually willing to put in the work to get better & will practice & take a series of lessons, especially when they see results.