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.