WeWork Mess Costs SoftBank’s Son $6 Billion in Net Worth

The transcript discusses a billionaire's significant net worth decline from $20 billion to $13 billion, highlighting the impact of write downs on various investments. It also addresses the collateral pledged for margin loans, causing concern among bankers. The discussion extends to the billionaire's relationship with Saudi Arabia and potential investment decisions, noting that while no public decisions have been made, the situation could affect future investments.

What is the significance of the billionaire's relationship with Saudi Arabia as mentioned in the text?

What potential actions are being considered by the investors in relation to the billionaire's financial situation?