Larry Ellison has more money than brains.
Want proof? He built a house for $200 million and then complained, when the house was assessed at $160 million, that it clearly wasn't worth anywhere near that because it was "overdeveloped". He claimed it was only worth about $60 million, and eventually the assessor's office agreed. This is just the tip of the iceberg of his wasteful acquisitiveness.
What does it mean to have more money than brains? It means you knowingly waste money. When you acquire far more of something than you can possibly use or properly appreciate, you have more money than brains. When you pay far more for something than it is worth to anybody else (meaning you could never resell it for more than a fraction of what it cost you), you have more money than brains.