Gattman wrote:
Except, now there's a waiting list at the FBO for instructors to
become available, so supply and demand says it ought to be a really
good time to be a CFI...

There's a waiting list for students willing to pay for a $15/hr instructor.
If it goes up there may not any students at all. While supply and demand
works well on the macro level it doesn't always do so on the micro level.