Look around you. I'm sure someone making 400k/yr has been to a restuarant / bar in the last week, after all they're pretty well off. How do these people that are making less than 50k per year, many also probably going to school, renting houses owned by people with 400k/yr salary, get by if even the people with 400k/yr "can't"?
You must realize even the people I'm describing here are also actually in the top % of the world, and the extra taxes any government would ask of you would barely even help them. There's about 5-10 rungs below the poor people I'm describing that need desprate help. And the idea of someone losing 30k in taxes a year because they have to own a 2 million dollar home instead of a 3 million dollar home is so absurd to the person deciding between school books for their kid or an extra 1 lb of protein for a decent meal.