I think that, even with royalties on his past work, he had more going out (due to debts) then coming in. I don’t think he was financially solvent enough to retire.
Well how do you get that way?
Oh...you build fairytale lands and let others handle the money.
You’d think at some point you’d just squirrel some away for a rainy day.
Actually another report said he was hiding money under the carpets at one point. He must have been surrounded by filthy thieves