Re: The problem with small-scale private philanthropy by the wealthiest is that it achieves little
It also allows governments to outsource their social responsibility to charity, meaning they are beholden to rich people's desires to provide public services that should be paid for by tax money. Better model is higher tax and good social services. Even a marginally higher rate combined with strong enforcement would boost government revenues enormously.
Of course there is also validity to the argument that government might not be so efficient in using additional resources wisely, but this is solved by transparency and good governance not by starving government of resources and leaving them beholden to the ultrarich