Plus, horde wealth like dragons just for the sake of feeding their addiction to more. I suspect going from having a billion dollars to having 100 million dollars would have a negligible impact on their quality of life or their toys. It's just a few less zeroes on their bank account or stock portfolio, but those zeroes are so goddamn important to them.
More than dragons. The richest dragon that you can run into in D&D or Pathfinder will be a Chaotic Evil Red Ancient Wyrm. If you got to them before they start eating their hoard, they will have at most 3-5 million gold pieces. Let's go for the high end of that. That's 500,000 oz of gold. That comes out to $1,041,345,000. So even the absolute greediest personification of greed, rarely, if ever, manages to break a billion dollars of wealth, and that takes them 10,000 years to amass.
These assholes are literally greedier than dragons.
Imo they can have all the toys they want, just let the rest of us have housing, food, and water. That doesn't sound like too much to ask, and yet here we are.