The concept is a little difficult to describe on paper, but I'll give it a shot. An expert skier already in motion has a number of forces in play. Momentum, centripetal force, gravity, all interplaying off of one another. At speed these forces are plentiful. A ski will turn as it is edged in the snow and moves forward, needing only a limited amount of pressure to get the ski to turn. Expert skiers typically don't add pressure, it's already there, but MANAGE it. That management is done through flexion and extension.
I'd like to learn how to manage the pressure since that's what many suggest I (we) should be doing. What exactly does it mean to manage the pressure? How do I do it? What is the outcome of managing the pressure correctly? What happens if I do not manage the pressure? How do I know if I am managing the pressure correctly? As for adding pressure or doing anything else with pressure, I have not used that term in my text.
So by your statement you're suggesting that you cannot make a turn solely on your inside ski? While that may not (usually) be the optimal option I'm sure you can do it. Now instead of thinking solely outside ski think of a blend. Then think of how the blend might be used in transition.
And I'm glad you mentioned the "get over it" drill. Mikaela is the perfect example for perfect dynamic balance. The drill is a practical drill for SOME things buyt I believe highly misunderstood, overused and abused. While we can ski like that, in practicality she does not. The prefect example is her Olympic Slalom Gold Medal run. If you look at that one gate where her outside ski didn't hold and she did a spontaneous WPT and did most of that turn on her inside. She could not have done that had she placed her CoM solidly and exclusively over the outside ski. The fact that her CoM was perfectly placed so she could extend and pressure EITHER ski is the perfect illustration of my point.
Edit: Again, look at J.F. Beaulieu. While he does get to his outside ski early in the turn, his inside ski, while ever so briefly gets pressured first in most of his turns.
You keep mentioning pressure and adding pressure and managing pressure. I have only spoken of balancing. I also mentioned balancing on the LTE which will be found on the inside ski. YM