Another way to think about this, if she invested the $10B as you said, she could spend $1M every DAY forever and still have about $130 left over each year.
How much would you need to spend in a day to have a very comfy life? I could maybe think of a way to spend 10k, I would struggle to spend 100k in a day. I have no idea how to spend 10x that much EVERY DAY.
Another way to think about this, if she invested the $10B as you said, she could spend $1M every DAY forever and still have about $130 left over each year.
How much would you need to spend in a day to have a very comfy life? I could maybe think of a way to spend 10k, I would struggle to spend 100k in a day. I have no idea how to spend 10x that much EVERY DAY.