Some of the managers we know didn't want to stay.
Sadly they are not fit and need help with people skills.
So the moral of the story is stay or learn.
Universally it's the same as they stay.
Currently there is a brain drain of smart leaders.
Kind of like how it is with a weak army.
Sad but true.
Oracle has full of family groups that they don't even want to be exposed to the new technology. That's why good people left, stinky managers with their followers stay.
Oracle has never valued and never rewarded good management, all that matter is meeting quota, doesn't matter how
As You said
Sad
And
True