One of these was a billionaire and also the other a multi-millionaire. You can also avoid unnecessary building costs and have an overabundance accurate budget estimates. This can be a question individuals are asking.
When my parents were young a million dollars was the definition of wealth. Today their home is worth at least that but are usually far from rich. They more suitable off than many others who own valuable property. There are pensioners trying to survive on the pension who own property now worth a million, or a lot of. Try telling them they are rich.