These FUD arguments are ridiculous.

Americans are already paying far more in privatised taxation - tribute - to healthcare companies, landlords, fossil fuel companies, and loan sharks of various kinds - than they would pay with higher federal tax rates investing in R&D, infrastructure, education, clean energy, and public health.

There's nothing hypothetical about pointing out that the billionaire economy is massively distorted and extractive, and is caused huge public harm which will literally remain visible for geological timescales.