What makes you rich is how you manage money: always spend less than you earn, invest wisely and diversify. That way you will be rich.
I totally agree with your opinion, Even though you have a lots of money but you can not handle and manage it properly you will end up bankcrupt. It is depend on the people what strategy they used to grow their money. There is a lot of way to do it, so we need to be wise to spend and to keep your money.