Lol, Harry already has a trust fund and it’s the trust fund money that is paying for the mortgage on the Montecito mansion. Btw, I’m quite sure Camilla’s kids being the children of well-off gentry folk (as her husband and herself are fairly well-off ) already had a trust fund regardless of whether or not Charles gave them money or whatever. Plus many members of the BRF have or had trust funds, Zara and Peter who aren’t working royals have trust funds, William like Harry also has a trust fund, the York girls should have trust funds (but with Andrew and Sarah for parents, you can only imagine), the Kent’s I think have trust funds because their grandfather created some for them.