I'm surprised Carmack doesn't address the obvious response to his position, which is "You're a millionaire, of course you think people should pay less taxes".

I'm surprised Carmack doesn't address the obvious response to his position, which is "You're a millionaire, of course you think people should pay less taxes". Libertarianism contains the wealthiest demographic -- it is an entirely unsurprising position for Carmack to be taking. I expect that simple self-interest tends to determine most of our political positions; which suggests that if we want to rationally determine what our society's obligation to poor people is, asking rich people for their opinion is the last thing we should do.