It’s actually easy if you think about it.

Rich people love comparing their wealth to others, so they can feel better about themselves. So we know quite precisely how much each billionaire is worth, cause they really like measuring those dicks.

Anyways, we can use this against them. You just tax the wealth. Not the income. Not the surplus or the profit. You tax the wealth.

For instance, during the Danish election, there were some parties who proposed the idea of a wealth tax such that all wealth above, say 30 million DKK would be taxed by 0.5% to 1% (depends what party you ask) every year. Someone worth 100 million Danish kroner would therefore need to pay 70*0.01 million or 700.000 kroner in taxes every year.

You could do more than 1% and 30 million for billionaires if you ask me.