> But you cannot seriously argue that capital owners "avoid contributing to the financing of our states and social systems".
Sure we can. Peter Thiel managed to put $5 billion in his Roth IRA.
https://www.propublica.org/article/billionaires-tax-avoidanc...
"Using stock deals unavailable to most people, Thiel has taken a retirement account worth less than $2,000 in 1999 and spun it into a $5 billion windfall... What’s more, as long as Thiel waits to withdraw his money until April 2027, when he is six months shy of his 60th birthday, he will never have to pay a penny of tax on those billions."