Land is scarce and cant be produced, so whoever already owns it will benefit after the change.
Capital can be produced, but what produces it? Labor. Even worse, capital depreciates over time so just owning some now doesn’t guarantee you an income in the post labor future.
In a fully automated world where human labor is truly of zero value it seems the main returns in the long run are to those who can gate keep valuable land, natural resources, and other fundamentally scarce assets.