[Astromancer]

Relative poverty is a real thing. So the Elites could live in godlike splendor, and the Masses in comfort and even modest, but substantial, luxury. The Masses would still feel poor.

Also key resources could be held only by the rich. Picture a society were the average Joe or Josie has magnificent healthcare paid for by taxes, but only the Elites have immortality.

It's not only what you have, it's also what you lack and can never have.