If Henry Ford and the Family principals who set up the Ford Foundation were able to comment on the same, those comments would probably be unprintable! This is the problem with these long-term foundations, their founder’s intentions get hijacked by trustees and administrators that ‘evolve’!
My sense is that the costs of the present arrangement are greater than the benefits so a restructuring is in order. Personally I’d suggest a take no prisoners approach - my contention is that if the ideas are good and the implementation is economical, then people will continue to contribute to the cause. See the Boy and Girl Scouts for example. Great institutions (and I’m less sanguine about the Girl Scouts btw, but both do good). Let’s make it simple and tax them all. Yes it will reduce the money available for their missions and some charities will fail. So be it. Better than what we have now. I recognize that some will not agree with me.