It seems the ideal world, as Barro, the coiner of the term "Ricardian Equivalence" would have it, is one in which ultimately returns to capital stay the same or increase to totality.
Such a world, which does ultimately increase capital to totality by strong tendency, is the Ricardian Prison, a slave ship, in which everyone born with no wealth (or reborn after bankruptcy) is a slave to pre-existing wealth. Instead, the proportionate returns to labor, in place of capital, should increase over time so ultimately all return, as such, is to labor. (There is also implied return to all, the meeting of their maximum needs possible to be as physically and socially fufilled as possible. But such is by rights, not by privileges. What I have been describing is the privileges of being socially productive.)
What needs to happen over time is that returns to wealth decrease over time, and ultimately collapse to zero, so fhat everyone is a free person, and fully equipped to their maximum possible extent by the infinity wealthy (or impoverished by capitalism) commonwealth.
In the meantime, the first chip to fall must be that wealth has no power, because if wealth has power, it will use it to continue to improve the returns to wealth in spite of total destruction of the commonwealth.
So all investment must be non-voting shares in the commonwealth. There can be no other capital ownership. Such shares pay a democratically determined dividend to the advantage of the recipient's living, but not to influence the quality of other's living disproportionately. All power should be exerted through direct democratic means, as people talking with one another. Democracy (perhaps Participatory Economics) should be our way of making decisions fairly and collectively about the common wealth.
Another chip to fall should be private inheiritance.