- can make political contributions, People complain about it alot, but as Bill Gates said,even his own fortune is a pittance compared to what the government spends each year. Political persuasions moves the needle in the US more than charity ever could hope to. Why give up on that option?
- invest in companies, how many people here have said they'd invest in SpaceX because they think its good for the human race.
- charities have to give a way a certain percentage every year
- charities are subject to alot of rules and oversight. You don't get rich by having other's tell you what to do with your own money.
Would you feel a bit pissed if you put the vast majority of your wealth into a charity and then found out that, that meant that you really couldn't do the things that were important to you due to the tax rules imposed upon charities?
What he's doing is smart if he wants to have the maximum impact on the world.
Consider the alternative. He's doesn't ever need to sell any FB shares in his lifetime, he'll just get loans from the bank against his shares, so this isn't really about dodging taxes.