Two lessons from different pros experience
I had a lesson once where the pro changed half a dozen things in 15 minutes and by the end I couldn't hit the ball............ I didn't go back.
Conversely, I've seen the same pro for 9 years.... I only have a lesson once every few months to "reboot" - if I had more time I'd have more.
Forget the quote from the Major Winner.... he can already hit good golf shots , whether that was Jim Furyk or Adam Scott!! Here's another one for you.... my mate's son is a young pro in Sussex. He went to a clinic given by Justin Rose... in the Q&A, someone asked "If you had an extra hour a day, what would you work on, long game, short game or putting??" "None of the above" was the reply... I'd head to the gym!
But most of us mortals on here don't have the technique of a Pro, so surely (effective) coaching to improve that must be of value?