The main point is that these are presumably upper-middle class families. You would expect that with their higher-than-average incomes they would have greater amounts of discretionary income that they would be spending and that their expenses would be spread out across more of the economy, supporting many other businesses and services. Instead the high salaries are being captured by housing costs. Sure they're not hurting, but it is surprising that dual-income, high-earning families are basically breaking even.