Earlier quoted context omitted.
Important qualifier on that that's missed for most "the very rich". The "rich" are often quite penny pinchers. My grandfather is "rich" (several millions, and in a very cheap place to live in the midwest) but he lived his entire life being extremely strict on spending and controlled personal finances very carefully. He still complains when there's large money to be spent on something that should be cheap.
Reminds me of the book, "The Millionaire Next Door". Seems like many of the people who have accumulated wealth tend to be fairly frugal.
That's also one of the few things I do respect about 'old money': they really drill it into their kids to not be ostentatious and wasteful with the familial wealth, thus escaping the aforementioned trap.