I DISAGREE WITH LAUREATE KRUGMAN

In discussing Kevin Drum's point that a healthy economy needs a thriving middle class, Paul Krugman writes:

Nonetheless, I’d say that in terms of strict economics it’s wrong. There’s no obvious reason why consumer demand can’t be sustained by the spending of the upper class — $200 dinners and luxury hotels create jobs, the same way that fast food dinners and Motel 6s do. In fact, the prosperity of New York City in the last decade — largely supported off of super-salaried Wall Street types — is a demonstration that you can have an economy sustained by the big spending of the few rather than the modest spending of large numbers of people.

One, 10 $20 dinners employs more people than 1 $200 dinner. Two, I've never thought of NYC as a whole as prosperous. Three, if this really worked, Tucson wouldn't be a low wage city teetering on a Depression.