Time to upset the PSIA types.
I think that the OP's question is rather silly. Why should we assume that anyone who wants to advance will spend obscene amounts of money on instruction that makes many beginners intermediates, and many intermediates, well intermediate, and many advanced skiers robots. I think that there are many, many skiers who can benefit from lessons. I also think that the PSIA has become so narrow minded that it is ignoring what skiing is progressing towards. They are currently showing the same attitude towards modern advances that they showed when skis started to have shape.
Basically I feel that the mid-level skiers are skipping lessons because it's a ton of money for a full day lesson and if you want to learn how to ski steep and deep you'll spend the day carving on groomers. (NOTE: carving is great and important, smearing turns is wrong) But it's the skiers who come out to the mountains a lot who could use some progression who skip the lessons because they want to learn something else.
So, yes I am once again proposing that PSIA begin to embrace skiing's advances and the changes in technology that have occcurred in the last 8 years