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> The reason that the rich were so rich, Vimes reasoned, was because they managed to spend less money.

This really isn't as crazy as it may sound. When my spouse was working in BigLaw, we rarely paid anything for weekends out. A typical case was a "charity gala" at a downtown hotel. A law firm partners would buy the tickets for an entire table but would inevitably be working and couldn't go. Even if he could, he still needed 6 or 8 other people so his table didn't have empty seats, which would be very embarrassing. So the call would go around - who has time to attend a free party? Me, that's who. The bar would be stocked with top-shelf liquor only, food was provided and excellent. The catch? You have to know people to get invited. And you have to be able to show up in a perfectly-fitting tuxedo with only a few hours notice. So you buy one, and it needs to be pretty good because you're going to wear it 20-30 times a year. Amortized out, an Armani costs a fraction of a rental.