Ha! I feel like you don't read the news. Billionaire Jack Ma barely made it out alive. China will absolutely continue to control and tax their billionaires, especially if they don't submit to the CCP. All the billionaires in Russia already work for Putin.

You are 100% right about sentence #2.

That's because the rich fled. (Actor Gerard Depardieu being the big story.) That's why it'll only work if it's a global wealth tax. Same for a global corporate tax.