This is not how any millionaire I know's brain works. Maybe I know an unrepresentative sample, but most focus their ingenuity on novel ways to create wealth rather than novel ways of avoiding expenditure.
Another sends clerks home when it gets slow, but will have me spend 50 hours (at substantially higher rates) chasing down a 23 cent imbalance in his books.
Another shares a corporate jet, but won't let his people eat at their desks to save on cleaning crew expenses.
I know one who will make his lunch companion get out of the car to find a parking meter with time already on it. Really.
I could go on and on...
Many people say, "Thats how they got rich." Bull. They're just stupid and cheap.
I know many millionaires of both kinds. IMO, it boils down to this: How did you get your money and, if you lost it all, how would you get it back?
The confident ones are not cheap. The inheriters are.