The nice thing about taxation though is that it doesn't rely on the whims of billionaires. Charity is unreliable and doesn't work for large, long term endeavors

The nice thing about taxation though is that it doesn't rely on the whims of billionaires. Charity is unreliable and doesn't work for large, long term endeavors that modern society is built on. I recommend reading the History of Equality by Thomas Piketty to better understand the efficacy of progressive income tax and wealth tax.