system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5:I frequently see people make the point that net-worth isn't cash, so what's the best way to estimate how much money the mega-wealthy have access to at any given time without liquidating assets?
gpt
Net worth is a headline with no substance.  Low quality "journalists" do a quick checks of public record stock holdings and multiply by the current stock price to create clickbait.  

The mega wealthy (bezos) own stock in their companies.  If they did actually liquidate, it would lower the value of that stock, and they would owe half of the proceeds in taxes.  

So, to be more accurate, instead of declaring Bezos has $200 B net worth, the headlines should state Bezos theoretically could have ~$70 B after months or more of selling his company, but his departure could lower the value even further.