To be clear, this is not a criticism. It just seems to me that the Queen’s net worth is a low ball number by a lot.
Held in trust. The Crown may not be able to liquidate its holdings, and certainly would not be able to realize all the “value” it holds if actually sold but then, they have had a millennium to ride the ups and downs.
But like the real estate, its value lies in the historic nature and not the commercial nature of much of the Crown holdings. No doubt a HUGE upkeep on all the structures that make up this array of wealth. Got an image to keep, you know.