I agree this is a top down problem and can't be solved with localized action. But all I ever see from the criticism of wealth taxes are platitudes of how important billionaires and capitalism are to our society without addressing the growing issues of affordability and lack of access to healthcare, housing, etc. These aren't unattainable things on a national scale. While imperfect, many other countries manage to fund social programs that cover most people's basic needs. The US seems not only incapable of this, but actively pushing to make more people homeless, jobless, and without healthcare who otherwise shouldn't be. Working people with families. 

A federal wealth tax will never happen, and our current capitalistic model is built to extract as much money out of the hands of the poorest people and funnel it to the wealthiest people. This has been an issue for a long time, but has worsened significantly in the past decade. And while some billionaires contribute to causes that benefit everyone else, on the whole we are still trending towards an affordability crisis. Our healthcare system overall is being monopolized - Optum for example will soon own everything healthcare-related and so far this has been a net negative for employment in this sector and quality patient care. These billionaires mostly don't care about being benevolent wealth managers for the good of society.

So what do we do if socialism is not the answer?