I can’t even really disagree with you, but not trying still isn’t an option. It’s our job to at least try to convince our immediate peers.

It’s trivial to design an inheritance tax that doesn’t tax a family’s (first) home and starts above a certain amount (500k, a million, two, make it 10 for all I care) that still allows lower and middle classes to build reasonable wealth. It’s also not that hard to not have a million loopholes for the excessively rich. That only gets difficult when people fall for the usual lies, like “businesses will close down and you will lose your jobs”.

Start penalizing tax havens like Ireland.

Tax based on passport, allow for taxes at their place of residence to take priority (so, you can pay low taxes in Ireland, but if it’s less than our tax, you pay the rest here), tax them a lot if they relinquish their passport. No need to start international beef about this.

Tax property, tax inheritance, tax capital gains no matter if realized or not, tax passive income of all kinds. Tax them progressively and tax the highest brackets high enough that these giant fortunes actually shrink. There is no other way (well… besides revolution) to reduce the spiraling inequality which is at the root of major problems all over the world.