Trying to understand your point here, but I keep arriving at the same counterfactual: the “capital income” to which you refer is reward for capital put at risk. It’s a false equivalence to compare this investment capital to UBI.
Interest income from deposit accounts is the only category of passive income that’s even remotely comparable to the “social income,” but that’s another logical fallacy, because…
- FDIC insurance operates at no cost to taxpayers;
- FDIC insurance is subject to $250k principal limit (i.e. nobody’s earning an income on some free lunch);
- Deposit interest rates are near zero & far below inflation rates (i.e. nobody’s earning an income on some free lunch)