The bread in your cupboard belongs to the hungry person; the coat hanging unused in your closet belongs to the person who needs it; the shoes rotting in your closet belong to the person with no shoes; the money which you put in the bank belongs to the poor. You do wrong to everyone you could help, but fail to help.
-- Basil, 4th Century
The large rooms of which you are so proud are in fact your shame. They are big enough to hold crowds--and also big enough to shut out the voices of the poor...There is your sister or brother, naked, crying! And you stand confused over the choice of an attractive floor covering.
-- Ambrose, 4th Century
That said, there should be a limit. Theres no reason why you should have more money than you can reasonably spend in a lifetime, even including extreme luxury.
Theres no longer a product or service Bezos cant buy. He can buy the 10 most expensive houses,cars and yachts in the world tomorrow. All his extra cash just allows him to buy influence, which should not be for sale.