There is comfortable, wealthy, and the super rich. The first ones still look at money as the rest of the population, while the ultra wealthy (the top .1% or higher) use their assets for power. They don't have to concern themselves almost all of the time on price tags for things, it's irrelevant. It's what their influence can allow them to do that is far more important. So yes, the richest live an expensive lifestyle, but they don't care.

I agree with others on the middle class falsehood. You either have enough assets and income to be able to live well, or you don't. At this point many millionaires are not that well off either because their expenses put them in the same situation the poorer people have to deal with. Maybe it's not only one paycheck away from disaster, but they have their own buffer zone that's not as large as they'd like in bad times. Likewise, there are "poor" people who manage their budgets well enough that they are comfortable, but because they don't have a lot they are at the mercy of things around them so that can disappear quickly.

The rich line is where you can lose entire businesses or a house or other large material thing and the money part doesn't phase you.