>>>Why on earth would he do all that if he is really 2 digits of billions net worth ?
>>
>>All of his holding are private, so we'll never know what he's worth.Tax returns certainly not.
>
>But comparing the estimated worth of property given as base figure to calculate property tax on might be interesting.
>Dunno enough about US taxes for very rich, esp. if increased with property to get an idea, but a billiomaire sitting for a TV show cannot be a profit center for himself unless he is in dire need of name recognition. Math just cannot add up...

Yes, it's unlikely that his true net worth - tangible assets less liabilities - is even one billion.
However, people often consider the present value of future earnings when assessing value.
They certainly do that for a share of stock and he seems to be doing that for himself.
That's why he can legitimately say that his perception of his net worth changes depending on how he feels that day.
If someone said that about Apple Computer you wouldn't be so skeptical.