Daddy Warbucks only gets an inflation boost if is money is invested properly. If he just has cash in his bank account, then it doesn't inflate as much. If it's in certain luxury items like planes and boats, it might actually be worth less. Scrooge McDuck is severely undervalue as he was tied up in gold, which is the best protection against inflation. That volume of gold in his money bin is worth trillions by itself, as one cubic foot weighs 1200 pounds, about 17000 ounces, 8.5 million today.