Also, there are diminishing returns to having a high net worth, i.e. every successive 2x increment matters less. No surprise there are goods on the market that are trying to counter this effect.
And I'm not even sure all of this is "evil". Italy wouldn't look anywhere near this nice if the rich people of the past hadn't splurged big on status symbols. Even in the United States where philanthropy is included in the portfolio of status symbols (or perhaps is even the major status symbol) you can see the positive effects. What Rockefeller did with much of his money was good and useful.
Anthony Bourdain has a whole chapter about the $800-meal phenomenon in NYC in Medium Raw, and, long story short, those people are getting rolled.
Front line valet placement in LA/NYC/Miami. When everyone has $500k cars, you need to go higher if you want them to keep your car out front. It’s a status thing.
$1.5MM in conspicuous consumption. The ability to burn through cash for no practical benefit is how much of our society signals success.
I'm not saying you should somehow suppress it if a $3M car makes you sick to your stomach, like you saw someone punching an orphan. It just seems arbitrary and crazy and I have a creeping horror that more and more people are like this.
Do you think that if someone enjoyed reading about the pyramids, was fascinated with them, and said "yes, I would build a pyramid like a pharoah if I could", that they ought to be sanctioned, punished, or shunned?
Someone could steal my bonds. They can't steal the roof of my car.