The state can do both good and bad things. Even in your war analogy, Russia (a state) can invade Ukraine and murder it's citizens, but Ukraine (a state) can def

The state can do both good and bad things. Even in your war analogy, Russia (a state) can invade Ukraine and murder it's citizens, but Ukraine (a state) can defend it's citizens. USA can have no affordable healthcare for citizens, Sweden can have affordable healthcare for it's citizens. A state can provide e.g safety or healthcare for millions, a philanthropist could not operate at that scale for a long time. Philanthropists also die on a shorter time frame than states and their successors may not want to continue to support the same things. I don't think the claim was that philanthropy doesn't work. But it doesn't scale to the levels of what a state can achieve. And therefore it is an inefficient way to use the resources. For every billionaire philanthropist that builds a hospital wing there are 50 more who buy 2 yachts. Tax them all and you can build 51 hospital wings and they can all have a single yacht each.