You say manage this 130 billion as though it materialized from nothing. The point of the original comment was that his accrual of this much money is the failure.
Who do you think generated that excess 110 billion? Ballmer's advanced managerial capabilities? Sure "the market" might have valued equity more, but that's still the policy failure. Saying that "this is how this works" is silly. It could just as well work some other way.
I'm not saying "this is how it works", I'm saying "this is how it should be". The whole point is for entrepreneurs to have control over businesses or big chunks of them.
The only way for your "policy" to "prevent" is to redistribute the control to someone else, usually bureaucrats. And I, again, strongly believe that it's better for businesses to be controlled by entrepreneurs and not by bureaucrats.