When you're a billionaire, purchasing extravagant homes likely comes as second nature, but imagine spending $80 million (£58m) on a beachfront mansion, only to demolish it just a few months later. Well, that's exactly what Oracle co-founder Larry Ellison is doing. The self-made business magnate, who is said to be worth $102 billion (£74b), clearly has bigger plans for his brand new seven-acre estate...