So the interesting question is what he actually owns at this point. I believe the Queen actually controls all the properties and they are given out or taken back at her pleasure. This could have a real impact on any settlement of the lawsuit as well as any awards by the jury.
You are correct. He is gifted a property to live in but it is not his, it is crown property. He received an income from the civil list when he had public duties but he hasn't had them for a while. He will have had private income though - some people will pay a lot to have an HRH on the board of this or that. He's probably a bit like a minor Star Wars character still (just about) making a living off annual ComicCon appearances now though. Is it just me picturing that with the bears the maid is being told "He'll be in bed. Don't worry. You need to put that one right in the corner on the floor. Make sure you face the wall and bend over very slowly when you do it. If you hear a funny 'ooooohhh' noise behind you it's probably best not to look'.
The proper ending for the Windsor Monarchy is as a reality show that lets us see exactly how absurd the notion of monarchy in the 21st century is.