Also they can buy Bitcoin and protect their wealth from invisible theives. If the fiat currency system collapse then their paper money will become ZimbabuIwan Dollars.
The solution is transferring their wealth into digital asset.
They must not be in such dire state that they will be forced to convert all of their assets to digital ones. Because digital assets are so safe, it is impossible to pass on their riches from one generation to the next. They must transfer their private keys together with their digital asset when passing it down from one generation to the next. Given that they are unable to predict their own demise, how confident are they that they can hand over their private keys to their closest family member. Wealth that is intended to be inherited should simply be saved as another asset that may be easily accessed by their family. Not everyone is a fan of blockchain, and they would rather quickly get the wealth than educate themselves about it. Looking at the fact that they were given birth to into riches and non stressful life.