There is no bank account of cash involved.

But $200M is less than .2% of his wealth.

It’s not even 10% of the annual growth in his wealth.

Bezos can write a check for $200,000,000 today and his bankers will cover it.

He can spend $1,000,000 to pay Goldman Sachs to leverage his investments to most efficiently cover just that one check’s cash value, and not even notice it.