He spent 75 million for the house next to one he already owned. He’s worth $156 billion.
Let’s say you have 100k in the bank. The equivalent purchase for you would be something costing roughly $50. He bought a mansion worth more than I’ll ever see for proportionally less than what I would spend on an AAA video game.
Oh and it’ll either hold value or appreciate, so he will likely just make more money on it. Or at the very least pay relatively a lot less once he decides to sell.