We should also work out the costs of not having good cheap public healthcare, education, infrastructure - and not also having public access to the best R&D talent because it's working to make billionaires even richer through clever rent-extraction strategies from the markets.

And so on.

All of these negatives cost money. Aside from the humanitarian considerations - not trivial - they're a huge drag on social mobility, innovation, and business opportunity.

The fact that some people feel irrationally inconvenienced by the prospect of extra taxes - which in reality will not materially affect them or their opportunities in any significant way - is an unconvincing reason to ignore the staggering social, economic, and political costs of their uniquely privileged position.