Perhaps the fact that his wealthy Stanford lawyer parents have always provided ample bubble wrap around him his whole life that has internalized making excuses for things and being used to getting wrapped in more bubble wrap rather than face negative consequence.
This is what comes to mind imo. Michael Lewis describes his ability to dance around questions as dazzling, but I have to wonder if his parents would have just called him out on his bullshit a little more often if he might not have gotten himself in as much trouble later.
Audience. What may come across as question dance dazzle might suffice to impress or allay concerns of certain people (employees, investors, etc), but it's not probable to work the same under oath and the techniques of prosecution. It's hard to dance around evidence with what you say, no matter how its said, with evidence to the contradictory put right in front of the court.
We did! He was doing exactly what he did to everyone else whose questions he tried to evade, it's just that this time people called him on it (and had legal power to compel non-evasive answers).