So get rid of indefinite compound interest.
Generational wealth has always struck me as fundamentally unjust, for the basic reason that you don't get to pick your parents. I see the argument that a man is entitled to the sweat of his brow; we can debate just how to define what is his sweat vs. infrastructural sweat, but the underlying point seems fair enough. I do not see the argument that a man is entitled to the sweat of his father's brow.
The principle that you are entitled to what your parents or grandparents earned is behind all sorts of injustice in the world, from hereditary monarchies and wars of succession to wealth gaps between majority and minority ethnic groups long after formal discrimination has been outlawed. Even when the inheritance doesn't happen, you still have evils like abusive rich parents having leverage over their closeted college-age children because the financial aid system (in the US, at least) assumes that children have access to their parents' money.
There's a lot of possible ways to implement the system, but it is not inevitable that wealth, once concentrated, does not dissolve, and even leaving wealth inequality aside, there are good reasons to get rid of it.
I hadn't even read the abstract of the article you posted when I clicked "reply," but in fact, that article advocates for the same thing:
> We show that a tax on large inherited fortunes, applied to a small portion of the most fortunate in the population, can efficiently arrest the concentration of wealth at intermediate levels.