It could be an interesting dive into different demographics in the U.S.

People who are house rich, but money poor (maybe inherited a house)

People who lived very frugally, but have a lot of assets.

People who built small businesses and will retire comfortably.

People who built small businesses but are barely getting by.

People who went from rags to riches

People who went from riches to rags.

And among all these different people ask what it means to be rich. What it means to be a millionaire. Whether 2-millionaire is the new millionaire.