Totally according to you, being rich does not necessarily mean wasting money, being rich also implies having the knowledge and intelligence to do nothing and still keep producing. As you say, a business or a job can disappear overnight, but if you are smart and know how to manage your finances you will never be without sustenance.

We don't necessarily have to show others our wealth, perhaps for some being rich means having the latest fashionable shoes, but for others it means being able to eat and have peace of mind for the rest of their lives.