Totally this, but also it's a misnomer that money can be "stockpiled" and not benefiting the economy.
Re:Doomsday Prep for the Super-Rich
by Apocryphon on Wednesday January 25, 2017 @02:10PM
(#13484819)
This sounds like a variation of the broken window fallacy
But it's also a dollar that's been spent - paying for school supplies for the daughter of the welder employed by the manufacturer, the medicine the truck driver's mom needs, and a few drinks at the bar for the retired vet who ran the backhoe for the bunker.
The economy isn't a closed system, so anything that gets the super rich to spend their money rather than stockpile it will benefit the economy as a whole.