They have an incentive to appease the elected officers who put them in that position
No, they don't. They only have an incentive not to screw up so greatly as to get fired. You overestimate the influence that elected officials have over civil servants.
Not terribly strong incentives
More importantly, you can just look at the outcomes. They are... not great.
What incentives does a billionaire without accountably to the users of the school system have?
Legacy.
And if by "users of the school system" you mean the kids or the parents, no one is accountable to them. Their only effective choice of influencing the system is Exit.
No, they don't. They only have an incentive not to screw up so greatly as to get fired. You overestimate the influence that elected officials have over civil servants.
Why would people hired by Mark Zuckerberg to fix the school system do any better? It's not like they are making him any money.
Their incentive is just to spend the money allocated to them while pretending to be doing something useful. Civil servants have similar incentives, but at least civil servants need to please elected official who in turn answer to the populace, while Zuckerberg's emp...
Mark Zuckerberg annouced that he is going to give away 99% of his facebook wealth ($45 billion) over his lifetime.
He announced guiding questions:
It's interesting that "live much longer and healthier lives" is on the list. Larry Page seems to divert money inside Google into Calico for anti-aging tech. Under Cook Apple also invests into health.
The future seems looking good :)